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Contour line

Index Contour line

A contour line (also isocline, isopleth, isarithm, or equipotential curve) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. [1]

394 relations: Acer rubrum, Adiabatic process, Adsorption, Aeronautical chart conventions (United States), African marsh harrier, Aggenstein, Agonal, Alcohol belts of Europe, Alfred Rehder, Alpine Club map, Ambient noise level, Anser (bird), Anstey Hill Recreation Park, Anticyclogenesis, Anticyclone, Arctic, Asthenosphere, Atlante Internazionale del Touring Club Italiano, Atmospheric diffraction, Atmospheric dispersion modeling, Atomic orbital, August Heinrich Petermann, Azumi Basin, Bailey (castle), Bainskloof moss frog, Balanced flow, Balsam Lake Mountain, Balsam Mountain (Ulster County, New York), Banksia prionotes, Bar (tropical cyclone), Barnes interpolation, Baroclinity, Barometer, Barreleye, Bathymetry, Bay of Kotor, Bayesian search theory, Bhuvan, Block (meteorology), Bohemian waxwing, Bolsterlanger Horn, Bontddu, Boone, North Carolina, Boston Transportation Planning Review, Brachychiton rupestris, Brooklyn, Broome County, New York, Buffer strip, Caddie (CAD system), California Powder Works, ..., Calmont (hill), Canfield Casino and Congress Park, Canton Viaduct, Cardinal direction, Carl Holty, Carpet plot, Cartogram, Cartography, Cassini oval, Cauchy–Riemann equations, Cave Gully, Celtic Sea, Chang'an, Charles Scrivener, Choropleth map, CIE 1960 color space, Climate change in Argentina, Climate of Argentina, Climatic regions of Argentina, Columbia Slough, Common chaffinch, Common firecrest, Comparison of DNA melting prediction software, Comparison of Earthworks Estimation Software, Cone of depression, Contour, Contour canal, Contour line, Contour plowing, Contour trenching, Contourite, Coriolis force, Corneal topography, Covalent radius of fluorine, Cross section (geometry), Cuisine of Pembrokeshire, Dasymetric map, Davenport diagram, Delaware Valley, Development of the TGV, Devil's Acre, Digital elevation model, Dodd (Lake District), Dog whelk, Drainage basin, Drawehn, Drömling, Duck and cover, E. 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Expand index (344 more) »

Acer rubrum

Acer rubrum, the red maple, also known as swamp, water or soft maple, is one of the most common and widespread deciduous trees of eastern and central North America.

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Adiabatic process

In thermodynamics, an adiabatic process is one that occurs without transfer of heat or matter between a thermodynamic system and its surroundings.

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Adsorption is the adhesion of atoms, ions or molecules from a gas, liquid or dissolved solid to a surface.

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Aeronautical chart conventions (United States)

This article describes the graphic conventions used in Sectional charts and Terminal area charts published for aeronautical navigation under Visual Flight Rules in the United States of America.

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African marsh harrier

The African marsh harrier (Circus ranivorus) is a bird of prey belonging to the harrier genus Circus.

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The Aggenstein is a mountain, 1,986 metres high (according to German survey) in the Allgäu Alps on the border Bavaria, Germany and Tyrol, Austria.

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Agonal and agonist may refer to.

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Alcohol belts of Europe

The alcohol belts of Europe are regions in Europe which are considered to be divided by association with either beer, wine, or spirits.

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Alfred Rehder

Alfred Rehder (4 September 1863 in Waldenburg, Saxony – 25 July 1949 in Jamaica Plain, Massachusetts) was a German-American botanical taxonomist and dendrologist who worked at the Arnold Arboretum of Harvard University.

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Alpine Club map

Alpine Club maps (Alpenvereinskarten, often abbreviated to AV-Karten i.e. AV maps) are specially detailed maps for summer and winter mountain climbers (mountaineers, hikers and ski tourers).

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Ambient noise level

In atmospheric sounding and noise pollution, ambient noise level (sometimes called background noise level, reference sound level, or room noise level) is the background sound pressure level at a given location, normally specified as a reference level to study a new intrusive sound source.

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Anser (bird)

The waterfowl genus Anser includes all grey geese (and sometimes the white geese).

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Anstey Hill Recreation Park

Anstey Hill Recreation Park is a protected area established in 1989 and located approximately northeast of Adelaide, South Australia.

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Anticyclogenesis is the development or strengthening of anticyclonic circulation in the atmosphere.

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An anticyclone (that is, opposite to a cyclone) is a weather phenomenon defined by the United States National Weather Service's glossary as "a large-scale circulation of winds around a central region of high atmospheric pressure, clockwise in the Northern Hemisphere, counterclockwise in the Southern Hemisphere".

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The Arctic is a polar region located at the northernmost part of Earth.

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The asthenosphere (from Greek ἀσθενής asthenḗs 'weak' + "sphere") is the highly viscous, mechanically weak and ductilely deforming region of the upper mantle of the Earth.

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Atlante Internazionale del Touring Club Italiano

The Atlante Internazionale del Touring Club Italiano was a comprehensive world reference atlas first published by the Touring Club Italiano in 1927.

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Atmospheric diffraction

Atmospheric diffraction is manifested in the following principal ways.

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Atmospheric dispersion modeling

Atmospheric dispersion modeling is the mathematical simulation of how air pollutants disperse in the ambient atmosphere.

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Atomic orbital

In quantum mechanics, an atomic orbital is a mathematical function that describes the wave-like behavior of either one electron or a pair of electrons in an atom.

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August Heinrich Petermann

Augustus Heinrich Petermann (18 April 182225 September 1878) was a German cartographer.

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Azumi Basin

The is part of the Matsumoto Basin in Nagano Prefecture, Japan.

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Bailey (castle)

A bailey or ward in a fortification is a courtyard enclosed by a curtain wall.

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Bainskloof moss frog

The Bainskloof moss frog or Bainskloof chirping frog (Arthroleptella bicolor) is a species of frogs in the family Pyxicephalidae.

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Balanced flow

In atmospheric science, balanced flow is an idealisation of atmospheric motion.

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Balsam Lake Mountain

Balsam Lake Mountain is one of the Catskill Mountains, located in the Town of Hardenburgh, New York, United States.

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Balsam Mountain (Ulster County, New York)

Balsam Mountain is one of the High Peaks of the Catskill Mountains in the U.S. state of New York.

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Banksia prionotes

Banksia prionotes, commonly known as acorn banksia or orange banksia, is a species of shrub or tree of the genus Banksia in the family Proteaceae.

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Bar (tropical cyclone)

The bar of a mature tropical cyclone is a very dark gray-black layer of cloud appearing near the horizon as seen from an observer preceding the approach of the storm, and is composed of dense stratocumulus clouds.

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Barnes interpolation

Barnes interpolation, named after Stanley L. Barnes, is the interpolation of unstructured data points from a set of measurements of an unknown function in two dimensions into an analytic function of two variables.

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In fluid dynamics, the baroclinity (often called baroclinicity) of a stratified fluid is a measure of how misaligned the gradient of pressure is from the gradient of density in a fluid.

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A barometer is a scientific instrument used in meteorology to measure atmospheric pressure.

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Barreleyes, also known as spook fish (a name also applied to several species of chimaera), are small deep-sea argentiniform fish comprising the family Opisthoproctidae found in tropical-to-temperate waters of the Atlantic, Pacific, and Indian Oceans.

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Bathymetry is the study of underwater depth of lake or ocean floors.

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Bay of Kotor

The Bay of Kotor (Montenegrin: Бока Которска, Boka Kotorska); Bocche di Cattaro), known simply as Boka ("the Bay"), is the name of the winding bay of the Adriatic Sea in southwestern Montenegro and the region of Montenegro concentrated around the bay. The bay has been inhabited since antiquity. Its well-preserved medieval towns of Kotor, Risan, Tivat, Perast, Prčanj and Herceg Novi, along with their natural surroundings, are major tourist attractions. Natural and Culturo-Historical Region of Kotor has been a World Heritage Site since 1979. Its numerous Orthodox and Catholic churches and monasteries make it a major pilgrimage site.

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Bayesian search theory

Bayesian search theory is the application of Bayesian statistics to the search for lost objects.

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Bhuvan, (lit: Earth), is a software application which allows users to explore a 2D/3D representation of the surface of the Earth.

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Block (meteorology)

Blocks in meteorology are large-scale patterns in the atmospheric pressure field that are nearly stationary, effectively “blocking” or redirecting migratory cyclones.

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Bohemian waxwing

The Bohemian waxwing (Bombycilla garrulus) is a starling-sized passerine bird that breeds in the northern forests of Eurasia and North America.

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Bolsterlanger Horn

The Bolsterlanger Horn is a grass mountain in the Allgäu Alps in Bavaria.

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Bontddu, Dolgellau, Gwynedd, Wales is a small settlement east of Barmouth.

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Boone, North Carolina

Boone is a town located in the Blue Ridge Mountains of western North Carolina, United States.

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Boston Transportation Planning Review

Boston Transportation Planning Review (BTPR), published in 1972, was a transportation planning program for metropolitan Boston, Massachusetts, which was responsible for analyzing and redesigning the entire area-wide transit and highway system in the 1970s.

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Brachychiton rupestris

Brachychiton rupestris, commonly known as the narrow-leaved bottle tree or Queensland bottle tree, is a tree in the family Malvaceae native to Queensland, Australia.

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Brooklyn is the most populous borough of New York City, with a census-estimated 2,648,771 residents in 2017.

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Broome County, New York

Broome County is a county in the U.S. state of New York.

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Buffer strip

A buffer strip is an area of land maintained in permanent vegetation that helps to control air, soil, and water quality, along with other environmental problems, dealing primarily on land that is used in agriculture.

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Caddie (CAD system)

Caddie is a mid-range computer-assisted draughting (CAD) software package for 2D and 3D design.

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California Powder Works

California Powder Works was the first American explosive powder manufacturing company west of the Rocky Mountains.

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Calmont (hill)

The Calmont, also called the Calmond, between Bremm and Ediger-Eller in the county of Cochem-Zell in the German state of Rhineland-Palatinate, is a steep hill on the heights above the Moselle river to a height of.

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Canfield Casino and Congress Park

Canfield Casino and Congress Park is a site in Saratoga Springs, New York, United States.

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Canton Viaduct

Canton Viaduct is a blind arcade cavity wall railroad viaduct built in 1834–35 in Canton, Massachusetts, for the Boston and Providence Railroad (B&P).

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Cardinal direction

The four cardinal directions or cardinal points are the directions north, east, south, and west, commonly denoted by their initials N, E, S, and W. East and west are at right angles to north and south, with east being in the clockwise direction of rotation from north and west being directly opposite east.

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Carl Holty

Carl Robert Holty (1900–1973) was a German-born American abstract painter.

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Carpet plot

A carpet plot is any of a few different specific types of plot.

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A cartogram is a map in which some thematic mapping variable – such as travel time, population, or GNP – is substituted for land area or distance.

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Cartography (from Greek χάρτης chartēs, "papyrus, sheet of paper, map"; and γράφειν graphein, "write") is the study and practice of making maps.

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Cassini oval

A Cassini oval is a quartic plane curve defined as the set (or locus) of points in the plane such that the product of the distances to two fixed points is constant.

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Cauchy–Riemann equations

In the field of complex analysis in mathematics, the Cauchy–Riemann equations, named after Augustin Cauchy and Bernhard Riemann, consist of a system of two partial differential equations which, together with certain continuity and differentiability criteria, form a necessary and sufficient condition for a complex function to be complex differentiable, that is, holomorphic.

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Cave Gully

Cave Gully is a seasonal river in Saint Ann Parish, Jamaica.

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Celtic Sea

The Celtic Sea (An Mhuir Cheilteach; Y Môr Celtaidd; An Mor Keltek; Ar Mor Keltiek; La mer Celtique) is the area of the Atlantic Ocean off the south coast of Ireland bounded to the east by Saint George's Channel; other limits include the Bristol Channel, the English Channel, and the Bay of Biscay, as well as adjacent portions of Wales, Cornwall, Devon, and Brittany.

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Chang'an was an ancient capital of more than ten dynasties in Chinese history, today known as Xi'an.

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Charles Scrivener

Charles Robert Scrivener ISO (2 November 1855 – 26 September 1923) was an Australian surveyor, and the person who surveyed numerous sites in New South Wales for the selection of a site for the Australian Capital Territory and Australia's capital city, Canberra.

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Choropleth map

A choropleth map (from Greek χῶρος ("area/region") + πλῆθος ("multitude")) is a thematic map in which areas are shaded or patterned in proportion to the measurement of the statistical variable being displayed on the map, such as population density or per-capita income.

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CIE 1960 color space

The CIE 1960 color space ("CIE 1960 UCS", variously expanded Uniform Color Space, Uniform Color Scale, Uniform Chromaticity Scale, Uniform Chromaticity Space) is another name for the chromaticity space devised by David MacAdam.

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Climate change in Argentina

According to scientists, global warming is predicted to have significant effects on the climate of Argentina.

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Climate of Argentina

The climate of Argentina is a complex subject: the vast size of the country and considerable variation in altitude make for a wide range of climate types.

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Climatic regions of Argentina

Due to its vast size and range of altitudes, Argentina possesses a wide variety of climatic regions, ranging from the hot subtropical region in the north to the cold subantarctic in the far south.

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Columbia Slough

The Columbia Slough is a narrow waterway, about long, in the floodplain of the Columbia River in the U.S. state of Oregon.

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Common chaffinch

The common chaffinch (Fringilla coelebs), usually known simply as the chaffinch, is a common and widespread small passerine bird in the finch family.

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Common firecrest

The common firecrest (Regulus ignicapilla) also known as the firecrest, is a very small passerine bird in the kinglet family.

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Comparison of DNA melting prediction software

This comparison of DNA melting prediction software includes source code and web based software for predicting DNA melting and structure.

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Comparison of Earthworks Estimation Software

The table below provides a list of software used in the engineering and construction industries to plan, execute and cost Earthworks (engineering).

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Cone of depression

A cone of depression occurs in an aquifer when groundwater is pumped from a well.

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Contour may refer to.

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Contour canal

A contour canal is an artificially-dug navigable canal which closely follows the contour line of the land it traverses in order to avoid costly engineering works such as boring a tunnel through higher ground, building an embankment over lower ground, or constructing a canal lock (or series of locks) to change the level of the canal.

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Contour line

A contour line (also isocline, isopleth, isarithm, or equipotential curve) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value.

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Contour plowing

Contour plowing or contour farming or Contour ploughing is the farming practice of plowing and or planting across a slope following its elevation contour lines.

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Contour trenching

Contour trenching is an agricultural technique that can be easily applied in arid sub-Sahara areas to allow for water, and soil conservation, and to increase agricultural production.

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A contourite is a sedimentary deposit commonly formed on continental rise to lower slope settings, although they may occur anywhere that is below storm wave base.

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Coriolis force

In physics, the Coriolis force is an inertial force that acts on objects that are in motion relative to a rotating reference frame.

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Corneal topography

Corneal topography, also known as photokeratoscopy or videokeratography, is a non-invasive medical imaging technique for mapping the surface curvature of the cornea, the outer structure of the eye.

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Covalent radius of fluorine

The covalent radius of fluorine is a measure of the size of a fluorine atom; it is approximated at about 60 picometres.

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Cross section (geometry)

In geometry and science, a cross section is the non-empty intersection of a solid body in three-dimensional space with a plane, or the analog in higher-dimensional spaces.

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Cuisine of Pembrokeshire

Pembrokeshire has been called "the cottage garden of Wales", due to its good soil and the beneficial effects of the Gulf Stream, which provide a mild climate and a longer growing season than other parts of the country.

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Dasymetric map

The dasymetric map is a method of thematic mapping, which uses areal symbols to spatially classify volumetric data.

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Davenport diagram

In acid base physiology, the Davenport Diagram is a graphical tool, developed by Horace W. Davenport, that allows a clinician or investigator to describe blood bicarbonate concentrations and blood pH following a respiratory and/or metabolic acid-base disturbance.

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Delaware Valley

The Delaware Valley is the valley through which the Delaware River flows.

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Development of the TGV

The TGV (Train à Grande Vitesse, high-speed train) is France's high-speed rail service.

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Devil's Acre

The Devil's Acre was a notorious slum near Westminster Abbey in Victorian London.

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Digital elevation model

A digital elevation model (DEM) is a 3D CG representation of a terrain's surface – commonly of a planet (e.g. Earth), moon, or asteroid – created from a terrain's elevation data.

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Dodd (Lake District)

Dodd is a small fell in the Lake District, Cumbria, England, four kilometres north-west of Keswick.

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Dog whelk

The dog whelk, dogwhelk, or Atlantic dogwinkle, scientific name Nucella lapillus, is a species of predatory sea snail, a carnivorous marine gastropod mollusc in the family Muricidae, the rock snails.

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Drainage basin

A drainage basin is any area of land where precipitation collects and drains off into a common outlet, such as into a river, bay, or other body of water.

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The Drawehn is a partly wooded and partly agricultural region of hills in the northeastern part of the German state of Lower Saxony, lying between the districts of Lüneburg and Uelzen in the west and Lüchow-Dannenberg in the east.

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The Drömling is a sparsely populated depression on the border of Lower Saxony and Saxony-Anhalt in Germany with an area of about.

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Duck and cover

"Duck and cover" is a method of personal protection against the effects of a nuclear explosion.

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E. Lee Spence

Edward Lee Spence (born 1947 in Germany) is a pioneer in underwater archaeology who studies shipwrecks and sunken treasure.

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East View Geospatial

East View Geospatial (EVG), formerly East View Cartographic (EVC), is a provider of worldwide maps, geospatial data and geographic information systems (GIS) services.

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Edmond Halley

Edmond (or Edmund) Halley, FRS (–) was an English astronomer, geophysicist, mathematician, meteorologist, and physicist.

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Edward Wright (mathematician)

Edward Wright (baptised 8 October 1561; died November 1615) was an English mathematician and cartographer noted for his book Certaine Errors in Navigation (1599; 2nd ed., 1610), which for the first time explained the mathematical basis of the Mercator projection, and set out a reference table giving the linear scale multiplication factor as a function of latitude, calculated for each minute of arc up to a latitude of 75°.

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Effect of gait parameters on energetic cost

The effect of gait parameters on energetic cost is a relationship that describes how changes in step length, cadence, step width, and step variability influence the mechanical work and metabolic cost involved in gait.

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Effective radius

The effective radius (R_e) of a galaxy is the radius at which half of the total light of the system is emitted.

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Electricity is the set of physical phenomena associated with the presence and motion of electric charge.

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The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic datum § Vertical datum).

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An ellipsoid is a surface that may be obtained from a sphere by deforming it by means of directional scalings, or more generally, of an affine transformation.

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An emagram is one of four thermodynamic diagrams used to display temperature lapse rate and moisture content profiles in the atmosphere.

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Enthalpy–entropy chart

An enthalpy–entropy chart, also known as the H–S chart or Mollier diagram, plots the total heat against entropy, describing the enthalpy of a thermodynamic system.

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The Eschkopf near Hofstätten in the German state of Rhineland-Palatinate (Südwestpfalz county) is a major hill, high in the Palatine Forest.

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Eucalyptus marginata

Eucalyptus marginata, commonly known as jarrah, is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia where it is one of most common species of Eucalyptus tree.

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Eurasian blackcap

The Eurasian blackcap (Sylvia atricapilla) usually known simply as the blackcap, is a common and widespread typical warbler.

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Eurasian nuthatch

The Eurasian nuthatch or wood nuthatch (Sitta europaea) is a small passerine bird found throughout temperate Asia and in Europe, where its name is the nuthatch.

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Eurasian treecreeper

The Eurasian treecreeper or common treecreeper (Certhia familiaris) is a small passerine bird also known in the British Isles, where it is the only living member of its genus, simply as treecreeper.

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European storm petrel

The European storm petrel, British storm petrel or just storm petrel (Hydrobates pelagicus) is a seabird in the northern storm petrel family, Hydrobatidae.

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Eye (cyclone)

The eye is a region of mostly calm weather at the center of strong tropical cyclones.

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Fairview Cemetery, Halifax, Nova Scotia

Fairview Cemetery is a cemetery in Halifax, Nova Scotia.

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Fall line (topography)

In mountain biking and skiing, a fall line refers to the line down a mountain or hill which is most directly downhill.

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A fathom is a unit of length in the imperial and the U.S. customary systems equal to, used especially for measuring the depth of water.

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Federal Aviation Administration

The Federal Aviation Administration (FAA) of the United States is a national authority with powers to regulate all aspects of civil aviation.

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Fei–Ranis model of economic growth

The Fei–Ranis model of economic growth is a dualism model in developmental economics or welfare economics that has been developed by John C. H. Fei and Gustav Ranis and can be understood as an extension of the Lewis model.

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Field (geography)

In the context of spatial analysis, geographic information systems, and geographic information science, the term field has been adopted from physics, in which it denotes a quantity that can be theoretically assigned to any point of space, such as temperature or density.

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Figure-ground in map design

An effectively designed map is one in which the intended message is clearly communicated to the map user.

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Flexible defense

The flexible defense is a military theory about the design of modern fortifications.

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A flownet is a graphical representation of two-dimensional steady-state groundwater flow through aquifers.

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In physics, a force is any interaction that, when unopposed, will change the motion of an object.

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Freezing level

The freezing level, or 0 °C (zero-degree) isotherm, represents the altitude in which the temperature is at 0 °C (the freezing point of water) in a free atmosphere (i.e. allowing reflection of the sun by snow, etc.). Any given measure is valid for only a short period of time, often less than a day.

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Garden warbler

The garden warbler (Sylvia borin) is a common and widespread small bird that breeds in most of Europe and in western Asia.

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General Bathymetric Chart of the Oceans

The General Bathymetric Chart of the Oceans (GEBCO) is a publicly available bathymetric chart of the world's oceans.

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Geographic information system

A geographic information system (GIS) is a system designed to capture, store, manipulate, analyze, manage, and present spatial or geographic data.

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Geography of Mauritania

Mauritania, a country in the western region of the continent of Africa, is generally flat, its 1,030,700 square kilometres forming vast, arid plains broken by occasional ridges and clifflike outcroppings.

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Geologic map

A geologic map or geological map is a special-purpose map made to show geological features.

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Geology of Scotland

The geology of Scotland is unusually varied for a country of its size, with a large number of differing geological features.

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Intergraph's GeoMedia is a geographic information system (GIS) application for working with and conducting analysis on geographic information as well as producing maps from that analysis.

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Geophysical signal analysis

Geophysical signal analysis is concerned with the detection and a subsequent processing of signals.

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George Goyder

George Woodroffe "Bud" Goyder (24 June 1826 – 2 November 1898) was a surveyor in South Australia during the latter half of the nineteenth century.

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Geostrophic current

A geostrophic current is an oceanic flow in which the pressure gradient force is balanced by the Coriolis effect.

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Geostrophic wind

The geostrophic wind is the theoretical wind that would result from an exact balance between the Coriolis force and the pressure gradient force.

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GIS file formats

A GIS file format is a standard of encoding geographical information into a computer file.

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Glossary of geography terms

This glossary of geography terms is a list of definitions of words and phrases used in geography and related fields, which describe and identify natural phenomena, geographical locations, spatial dimension and natural resources.

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Glossary of marine sciences terms

This is a glossary of terms used in fisheries, fisheries management and fisheries science.

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The goldcrest (Regulus regulus) is a very small passerine bird in the kinglet family.

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Golden Software

Golden Software LLC is a privately held, American company based in Golden, Colorado.

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Gradient descent

Gradient descent is a first-order iterative optimization algorithm for finding the minimum of a function.

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The Grid Analysis and Display System (GrADS) is an interactive desktop tool that is used for easy access, manipulation, and visualization of earth science data.

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Grand Contour Canal

The Grand Contour Canal in England and Wales was intended to enhance and upgrade the British canal system, but was never built.

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Graph of a function

In mathematics, the graph of a function f is, formally, the set of all ordered pairs, and, in practice, the graphical representation of this set.

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Graphics Layout Engine

Graphics Layout Engine (GLE) is a graphics scripting language designed for creating publication quality graphs, plots, diagrams, figures and slides.

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Groundwater flow equation

Used in hydrogeology, the groundwater flow equation is the mathematical relationship which is used to describe the flow of groundwater through an aquifer.

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Gulf of California moisture surge

A Gulf of California moisture surge, or simply gulf surge, is a meteorological event where a pulse of high humidity air is pushed up the Gulf of California.

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Haida Eddies

Haida Eddies are episodic, clockwise rotating ocean eddies that form during the winter off the west coast of British Columbia’s Haida Gwaii and Alaska’s Alexander Archipelago.

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Healdsburg, California

Healdsburg is a city located in Sonoma County, California, in the United States.

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Heat map

A heat map (or heatmap) is a graphical representation of data where the individual values contained in a matrix are represented as colors.

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Henri de Toulouse-Lautrec

Henri Marie Raymond de Toulouse-Lautrec-Monfa (24 November 1864 – 9 September 1901), also known as Henri de Toulouse-Lautrec, was a French painter, printmaker, draughtsman, caricaturist, and illustrator whose immersion in the colourful and theatrical life of Paris in the late 19th century allowed him to produce a collection of enticing, elegant, and provocative images of the modern, sometimes decadent, affairs of those times.

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Henry MacLauchlan

Henry MacLauchlan (26 April 1792 – 27 January 1882) was a British military, geological and archaeological surveyor.

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High-voltage cable

A high-voltage cable (HV cable) is a cable used for electric power transmission at high voltage.

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Highpointing is the sport of ascending to the point with the highest elevation within a given area (the "highpoint").

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History of cartography

Cartography, or mapmaking, has been an integral part of the human history for thousands of years.

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History of longitude

The history of longitude is a record of the effort, by astronomers, cartographers and navigators over several centuries, to discover a means of determining longitude.

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History of surface weather analysis

The history of surface weather analysis concerns the timetable of developments related to surface weather analysis.

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History of the Great Wall of China

The history of the Great Wall of China began when fortifications built by various states during the Spring and Autumn (771–476) and Warring States periods (475–221) were connected by the first emperor of China, Qin Shi Huang, to protect his newly founded Qin dynasty (221–206) against incursions by nomads from Inner Asia.

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History of the petroleum industry in Canada (frontier exploration and development)

Canada's early petroleum discoveries took place near population centres or along lines of penetration into the frontier.

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The Hochthürmerberg (variously also called the Hochthürmchen, Hochthürmen or Hochthürmer), is a hill,, in the Eifel region.

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Hohe Warte (Karwendel)

The Hohe Warte is a mountain, Bundesamt für Eich- und Vermessungswesen Österreich:.

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The Holzstöcke is an elongated, densely forested, mountain range running from north to south in the German state of Baden-Württemberg.

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Hoodoo Mountain

Hoodoo Mountain is a potentially active flat-topped stratovolcano in the Stikine Country of northwestern British Columbia, Canada, located northeast of Wrangell, Alaska, on the north side of the lower Iskut River and east of its junction with the Stikine River.

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The Hortenkopf is a hill, 606 metres above sea level (NN), in the German state of Rhineland-Palatinate, which lies in the middle of the Palatine Forest between Hofstätten and Leimen.

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Humid continental climate

A humid continental climate (Köppen prefix D and a third letter of a or b) is a climatic region defined by Russo-German climatologist Wladimir Köppen in 1900, which is typified by large seasonal temperature differences, with warm to hot (and often humid) summers and cold (sometimes severely cold in the northern areas) winters.

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Hurricane Ione

Hurricane Ione was a strong, Category 4 hurricane that affected North Carolina in September 1955, bringing high winds and significant rainfall.

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Hypsometric tints

Hypsometric tints (also called layer tinting, elevation tinting, elevation coloring, or hysometric coloring) are colors placed between contour lines to indicate elevation.

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Image segmentation

In computer vision, image segmentation is the process of partitioning a digital image into multiple segments (sets of pixels, also known as super-pixels).

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Implicit curve

In mathematics an implicit curve is a plane curve which is defined by an implicit equation relating the coordinate variables x and y. For example, the unit circle is defined by the implicit equation x^2+y^2.

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Implicit function

In mathematics, an implicit equation is a relation of the form R(x_1,\ldots, x_n).

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Index of meteorology articles

This is a list of meteorology topics.

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Index of physics articles (C)

The index of physics articles is split into multiple pages due to its size.

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Index of physics articles (I)

The index of physics articles is split into multiple pages due to its size.

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Index of real estate articles

This aims to be a complete list of the articles on real estate.

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Indian Mound Park (Dauphin Island, Alabama)

Indian Mound Park, also known as Shell Mound Park or Indian Shell Mound Park, is a park and bird refuge located on the northern shore of Dauphin Island, a barrier island of Mobile County, Alabama in the United States.

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Inpainting is the process of reconstructing lost or deteriorated parts of images and videos.

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Irish Conservation Box

The Irish Conservation Box (ICB) or Biologically Sensitive Area (BSA) is a Marine Protected Area stretching along the southwest coast of Ireland.

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Irrigation statistics

This page shows statistical data on irrigation of agricultural lands worldwide.

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Isobar may refer to.

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Isobel (disambiguation)

Isobel is the Scottish variant of Isabel, a feminine given name.

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Isochronous timing

A sequence of events is isochronous if the events occur regularly, or at equal time intervals.

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An isogloss, also called a heterogloss (see Etymology below), is the geographic boundary of a certain linguistic feature, such as the pronunciation of a vowel, the meaning of a word, or the use of some morphological or syntactic feature.

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Isoline may refer to.

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Isoline retrieval

Isoline retrieval is a remote sensing inverse method that retrieves one or more isolines of a trace atmospheric constituent or variable.

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Isopach map

An isopach map illustrates thickness variations within a tabular unit, layer or stratum.

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In geometry, an isophote is a curve on an illuminated surface that connects points of equal brightness.

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An isopycnal is a line connecting points of a specific density or potential density.

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An isoquant (derived from quantity and the Greek word iso, meaning equal) is a contour line drawn through the set of points at which the same quantity of output is produced while changing the quantities of two or more inputs. While an indifference curve mapping helps to solve the utility-maximizing problem of consumers, the isoquant mapping deals with the cost-minimization problem of producers. Isoquants are typically drawn along with isocost curves in capital-labor graphs, showing the technological tradeoff between capital and labor in the production function, and the decreasing marginal returns of both inputs. Adding one input while holding the other constant eventually leads to decreasing marginal output, and this is reflected in the shape of the isoquant. A family of isoquants can be represented by an isoquant map, a graph combining a number of isoquants, each representing a different quantity of output. Isoquants are also called equal product curves. An isoquant shows that extent to which the firm in question has the ability to substitute between the two different inputs at will in order to produce the same level of output. An isoquant map can also indicate decreasing or increasing returns to scale based on increasing or decreasing distances between the isoquant pairs of fixed output increment, as output increases. If the distance between those isoquants increases as output increases, the firm's production function is exhibiting decreasing returns to scale; doubling both inputs will result in placement on an isoquant with less than double the output of the previous isoquant. Conversely, if the distance is decreasing as output increases, the firm is experiencing increasing returns to scale; doubling both inputs results in placement on an isoquant with more than twice the output of the original isoquant. As with indifference curves, two isoquants can never cross. Also, every possible combination of inputs is on an isoquant. Finally, any combination of inputs above or to the right of an isoquant results in more output than any point on the isoquant. Although the marginal product of an input decreases as you increase the quantity of the input while holding all other inputs constant, the marginal product is never negative in the empirically observed range since a rational firm would never increase an input to decrease output. An isoquants shows all those combinations of factors which produce same level of output. An isoquants is also known as equal product curve or iso-product curve.

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An isosurface is a three-dimensional analog of an isoline.

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Isotherm may refer to.

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Isothetic (from Greek roots: iso- for "equal, same, similar" and thetos for position, placement) may refer to one of the following.

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Jackson Creek (Victoria)

The Jackson Creek (sometimes incorrectly spelled as Jacksons Creek) is a watercourse of the Port Phillip catchment, located in the outer northern suburbs of Melbourne, in the Australian state of Victoria.

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James Dodson (mathematician)

James Dodson FRS (c.1705–1757) was a British mathematician, actuary and innovator in the insurance industry.

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James W. Bagley

Major James Warren Bagley (October 31, 1881 – February 19, 1947) was an American aerial photographer, topographic engineer and inventor.

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Jaunsar-Bawar is a hilly region, 85 km from Mussoorie, in Chakrata tehsil, in Dehradun district, it represents the geographical region inhabited by the Jaunsaris and bawaris, which traces its origin from the Pandavas of Mahabharata & Rajputs of Rajasthan.

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John Bartholomew

John Bartholomew Junior (25 December 1831 – 29 March 1893) was a Scottish cartographer.

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Juneau, Alaska

The City and Borough of Juneau (Tlingit: Dzánti K'ihéeni), commonly known as Juneau, is the capital city of Alaska.

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Justus Perthes (publishing company)

Justus Perthes Publishers (Justus Perthes Verlag) was established in 1785 in Gotha, Germany.

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Kaaterskill High Peak

Kaaterskill High Peak (officially just High Peak) is one of the Catskill Mountains, located in the Town of Hunter in Greene County, New York, United States.

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A keratoscope, sometimes known as Placido's disk, is an ophthalmic instrument used to assess the shape of the anterior surface of the cornea.

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Kimon Nicolaïdes

Kimon Nicolaїdes (1891–1938) was a Greek American art teacher, author and artist.

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Lagrange multiplier

In mathematical optimization, the method of Lagrange multipliers (named after Joseph-Louis Lagrange) is a strategy for finding the local maxima and minima of a function subject to equality constraints (i.e., subject to the condition that one or more equations have to be satisfied exactly by the chosen values of the variables).

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Lancaster Canal

The Lancaster Canal is a canal in North West England, originally planned to run from Westhoughton in Lancashire to Kendal in south Cumbria (historically in Westmorland).

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A landform is a natural feature of the solid surface of the Earth or other planetary body.

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Léon Lalanne

Léon Louis Lalanne (real surname: Chrétien-Lalanne; 3 July 1811 – 12 March 1892) was a French engineer and politician.

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Lebesgue integration

In mathematics, the integral of a non-negative function of a single variable can be regarded, in the simplest case, as the area between the graph of that function and the -axis.

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Legionnaire (video game)

Legionnaire is a computer game for the Atari 8-bit series created by Chris Crawford in 1982, and released through Avalon Hill.

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Level set

In mathematics, a level set of a real-valued function ''f'' of ''n'' real variables is a set of the form that is, a set where the function takes on a given constant value c. When the number of variables is two, a level set is generically a curve, called a level curve, contour line, or isoline.

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Light pollution

Light pollution, also known as photopollution, is the presence of anthropogenic light in the night environment.

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Lijevče, also the Lijevče field (Lijevče polje, Лијевче поље), is a small geographical region in northern Bosnia and Herzegovina; a plain situated between the rivers Sava and Vrbas, and Mount Kozara.

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Line art

Line art or line drawing is any image that consists of distinct straight or curved lines placed against a (usually plain) background, without gradations in shade (darkness) or hue (color) to represent two-dimensional or three-dimensional objects.

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Line of greatest slope

In topography, the line of greatest slope is a curve following the steepest slope.

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List of algorithms

The following is a list of algorithms along with one-line descriptions for each.

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List of Chinese inventions

China has been the source of many innovations, scientific discoveries and inventions.

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List of curves topics

This is an alphabetical index of articles related to curves.

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List of Greek and Latin roots in English/T

Category:Lists of words.

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List of highest mountains of Germany

This is a list of the highest mountains in Germany.

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List of highest points in California by county

This is a list of highest points in California, in alphabetical order by county.

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List of highest points in Nevada by county

This is a list of highest points in the U.S. state of Nevada, in alphabetical order by county.

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List of mountains of the Allgäu Alps

This list of mountains of the Allgäu Alps tabulates those peaks and summits with names and spot heights that lie within the Allgäu Alps and that have a prominence of over.

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List of multivariable calculus topics

This is a list of multivariable calculus topics.

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List of numerical computational geometry topics

List of numerical computational geometry topics enumerates the topics of computational geometry that deals with geometric objects as continuous entities and applies methods and algorithms of nature characteristic to numerical analysis.

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List of Top 10 characters

This is a list of Top 10 characters.

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Louis-Léger Vauthier

Louis-Léger Vauthier (6 April 1815 – 5 October 1901) was a French engineer who designed bridges and roadways and was elected to the National Assembly of France in May 1849, as a member for the departement of Cher.

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Magnetic declination

Magnetic declination or variation is the angle on the horizontal plane between magnetic north (the direction the north end of a compass needle points, corresponding to the direction of the Earth's magnetic field lines) and true north (the direction along a meridian towards the geographic North Pole).

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Magnetic dip

Magnetic dip, dip angle, or magnetic inclination is the angle made with the horizontal by the Earth's magnetic field lines.

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A map is a symbolic depiction emphasizing relationships between elements of some space, such as objects, regions, or themes.

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Map symbolization

Map symbolization is the characters, letters, or similar graphic representations used on a map to indicate an object or characteristic in the real world.

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Marching squares

Marching squares is a computer graphics algorithm that generates contours for a two-dimensional scalar field (rectangular array of individual numerical values).

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Marina Beach

Marina Beach is a natural urban beach in the city of Chennai (Madras), India, along the Bay of Bengal.

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Mass spectrometry

Mass spectrometry (MS) is an analytical technique that ionizes chemical species and sorts the ions based on their mass-to-charge ratio.

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Mauna Loa

Mauna Loa (or; Hawaiian:; Long Mountain) is one of five volcanoes that form the Island of Hawaii in the U.S. state of Hawaiʻi in the Pacific Ocean.

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Mendoza, Argentina

Mendoza is the capital of the province of Mendoza in Argentina.

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Meteorology is a branch of the atmospheric sciences which includes atmospheric chemistry and atmospheric physics, with a major focus on weather forecasting.

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Mian Mohammed Sharif

Mian Mohammed Sharif (Urdu: محمد شريف; b.1917 - 22 October 1997), was a Pakistani mathematician and senior bureaucrat.

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The Mittagberg ("Midday Mountain") is a mountain located in the Allgäu Alps in Bavaria, Germany.

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Mojave, California

Mojave (formerly, Mohave) is a census-designated place (CDP) in Kern County, California, United States.

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Morse theory

"Morse function" redirects here.

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The Mosisberg near Hofstätten in the German state of Rhineland-Palatinate (Südwestpfalz county) is a hill,, in the central Palatine Forest.

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Mount Buller, Victoria

Mount Buller is a town located in the Shire of Mansfield in the Alpine region of the Australian state of Victoria.

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Mount Muir

Mount Muir is a peak in the Sierra Nevada of California, south of Mount Whitney.

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Mountain pass

A mountain pass is a navigable route through a mountain range or over a ridge.

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National Elevation Dataset

The National Elevation Dataset (NED) consists of high precision ground surface elevation data for the United States.

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National Mine Map Repository

The National Mine Map Repository (NMMR) is part of the United States Department of the Interior (DOI), Office of Surface Mining Reclamation and Enforcement (OSMRE or OSM).

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Natural ventilation

Natural ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems.

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Nautical chart

A nautical chart is a graphic representation of a maritime area and adjacent coastal regions.

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NEi Fusion

NEi Fusion is a finite element analysis program sold by NEi Software that is used by engineers to build and analyze 3D models of parts and assemblies of various products.

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Newlyn (Lulyn: Lu 'fleet', Lynn/Lydn 'pool') is a seaside town and fishing port in south-west Cornwall, UK.

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Newton's rings

Newton's rings is a phenomenon in which an interference pattern is created by the reflection of light between two surfaces—a spherical surface and an adjacent touching flat surface.

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Nicolas F. Shi

Nicolas F. Shi is an artist in Washington, D.C. He is best known for paintings that create an illusion of depth through contour lines like those on a topographic map, with the space between adjacent ones of the contour lines being filled by a single color.

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Noise regulation

Noise regulation includes statutes or guidelines relating to sound transmission established by national, state or provincial and municipal levels of government.

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Nonlinear programming

In mathematics, nonlinear programming is the process of solving an optimization problem defined by a system of equalities and inequalities, collectively termed constraints, over a set of unknown real variables, along with an objective function to be maximized or minimized, where some of the constraints or the objective function are nonlinear.

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Null corrector

A null corrector is an optical device used in the testing of large aspheric mirrors.

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Numerical continuation

Numerical continuation is a method of computing approximate solutions of a system of parameterized nonlinear equations, The parameter \lambda is usually a real scalar, and the solution \mathbf u an ''n''-vector.

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Nymphoides peltata

Nymphoides peltata (syn. Villarsia nymphaeoides, Limnanthemum peltatum S.G. Gmel., Nymphoides nymphaeoides (L.) Britton, fringed water lily, yellow floating heart, floating heart, water fringe, entire marshwort) is perennial, rooted aquatic plant with floating leaves of the family Menyanthaceae.

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Olst-Wijhe is a municipality in the province of Overijssel, eastern Netherlands.

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Optical flat

An optical flat is an optical-grade piece of glass lapped and polished to be extremely flat on one or both sides, usually within a few tens of nanometres (billionths of a meter).

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Ordnance Survey

Ordnance Survey (OS) is a national mapping agency in the United Kingdom which covers the island of Great Britain.

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Orienteering map

An orienteering map is a map specially prepared for use in orienteering competitions.

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Orthogonal trajectory

In mathematics an orthogonal trajectory is.

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Outline of cartography

The following outline is provided as an overview of and topical guide to cartography: Cartography (also called mapmaking) – study and practice of making and using maps or globes.

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Oxford Canal

The Oxford Canal is a narrow canal in central England linking Oxford with Bedworth (between Coventry and Nuneaton on the Coventry Canal) via Banbury and Rugby.

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Pantala flavescens

Pantala flavescens, the globe skimmer, globe wanderer or wandering glider, is a wide-ranging dragonfly of the family Libellulidae.

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Periodic travelling wave

In mathematics a periodic travelling wave (or wavetrain) is a periodic function of one-dimensional space that moves with constant speed.

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Pewsey White Horse

Pewsey White Horse is a hill figure of a white horse near the village of Pewsey, Wiltshire, England.

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Photogrammetry is the science of making measurements from photographs, especially for recovering the exact positions of surface points.

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Picea glauca

Picea glauca, the white spruce, is a species of spruce native to the northern temperate and boreal forests in North America.

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Pictorial map

Pictorial maps (also known as illustrated maps, panoramic maps, perspective maps, bird’s-eye view maps, and geopictorial maps) depict a given territory with a more artistic rather than technical style.

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Piner Creek

Piner Creek is a stream in northeast Santa Rosa, California, United States which originates as an outlet of Fountaingrove Lake.

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The Plackweghöhe ("Plackweg Heights"), whose main summit has hitherto had no official name, is the highest point in the borough of Warstein, the hill ridge of the Plackwald, the North Sauerland Uplands, and the Arnsberg Forest Nature Park in the German state of North Rhine-Westphalia.

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Plateau (mathematics)

A plateau of a function is a part of its domain where the function has constant value.

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Plot (graphics)

A plot is a graphical technique for representing a data set, usually as a graph showing the relationship between two or more variables.

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Pole figure

A pole figure is a graphical representation of the orientation of objects in space.

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Population geography

Population geography is a division of human geography.

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Populus tremuloides

Populus tremuloides is a deciduous tree native to cooler areas of North America, one of several species referred to by the common name aspen.

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Posterization or posterisation of an image entails conversion of a continuous gradation of tone to several regions of fewer tones, with abrupt changes from one tone to another.

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Potamon ibericum

Potamon ibericum is a Eurasian species of freshwater crab.

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Potentiometric surface

A potentiometric surface is the imaginary plane where a given reservoir of fluid will "equalize out to" if allowed to flow.

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Pressure gradient

In atmospheric science (meteorology, climatology and related fields), the pressure gradient (typically of air, more generally of any fluid) is a physical quantity that describes in which direction and at what rate the pressure increases the most rapidly around a particular location.

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Prognostic chart

A prognostic chart is a map displaying the likely weather forecast for a future time.

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Queens is the easternmost and largest in area of the five boroughs of New York City.

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Radar in World War II

Radar in World War II greatly influenced many important aspects of the conflict.

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Radioactive contamination from the Rocky Flats Plant

The Rocky Flats Plant, a former U.S. nuclear weapons production facility located about 15 miles northwest of Denver, caused radioactive (primarily plutonium, americium, and uranium) contamination within and outside its boundaries.

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Radiosity (radiometry)

In radiometry, radiosity is the radiant flux leaving (emitted, reflected and transmitted by) a surface per unit area, and spectral radiosity is the radiosity of a surface per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength.

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Ragone plot

A Ragone plot (pronounced "ru-GO-nee") is a plot used for performance comparison of various energy-storing devices.

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Raised-relief map

A raised-relief map or terrain model is a three-dimensional representation, usually of terrain, materialized as a physical artifact.

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Raw Dykes

Raw Dykes is a Roman earthwork and scheduled monument in Leicester.

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Reinforced solid

In solid mechanics, a reinforced solid is a brittle material that is reinforced by ductile bars or fibres.

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Reno–Tahoe International Airport

Reno–Tahoe International Airport is a public and military use airport located three nautical miles (6 km) southeast of downtown Reno, in Washoe County, Nevada.

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Rietvlei Wetland Reserve

The Rietvlei Wetland Reserve is a nature reserve situated in Milnerton, Cape Town, South Africa.

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Rigid body

In physics, a rigid body is a solid body in which deformation is zero or so small it can be neglected.

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Rigid motion segmentation

In computer vision, rigid motion segmentation is the process of separating regions, features, or trajectories from a video sequence into coherent subsets of space and time.

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River anticlines

A river anticline is a geologic structure that is formed by the focused uplift of rock caused by high erosion rates from large rivers relative to the surrounding areas.

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Roadway air dispersion modeling

Roadway air dispersion modeling is the study of air pollutant transport from a roadway or other linear emitter.

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First developed in 1985 by RockWare Inc, RockWorks is used by the mining, petroleum, and environmental industry for subsurface visualization, borehole database management as well as the creation of grids, solid models, calculating volumetric analysis, etc.

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ROF Bridgwater

Royal Ordnance Factory (ROF) Bridgwater was a factory between the villages of Puriton and Woolavington in the Sedgemoor district of Somerset, UK that produced high explosives for munitions.

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Rote Flüh

The Rote Flüh is a peak in the Tannheim Mountains, a sub-range of the Allgäu Alps.

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Rubin vase

Rubin's vase (sometimes known as the Rubin face or the figure–ground vase) is a famous set of ambiguous or bi-stable (i.e., reversing) two-dimensional forms developed around 1915 by the Danish psychologist Edgar Rubin.

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Sabatier principle

The Sabatier principle is a qualitative concept in chemical catalysis named after the French chemist Paul Sabatier.

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Saddle point

In mathematics, a saddle point or minimax point is a point on the surface of the graph of a function where the slopes (derivatives) of orthogonal function components defining the surface become zero (a stationary point) but are not a local extremum on both axes.

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The Sahara (الصحراء الكبرى,, 'the Great Desert') is the largest hot desert and the third largest desert in the world after Antarctica and the Arctic.

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Saliency map

In computer vision, a saliency map is an image that shows each pixel's unique quality.

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Salinity is the saltiness or amount of salt dissolved in a body of water (see also soil salinity).

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San Jose International Airport

Norman Y. Mineta San Jose International Airport is a city-owned public airport in San Jose, California, United States.

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San Pedro de Atacama

San Pedro de Atacama is a Chilean town and commune in El Loa Province, Antofagasta Region.

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The sanderling (Calidris alba) is a small wading bird.

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Saw Kill (Hudson River tributary)

The Saw Kill is a tributary of the Hudson River, called the Metambesem by the Algonquin people of the area and sometimes called Sawkill Creek today.

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Sørfold is a municipality in Nordland county, Norway.

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Scalar potential

Scalar potential, simply stated, describes the situation where the difference in the potential energies of an object in two different positions depends only on the positions, not upon the path taken by the object in traveling from one position to the other.

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Schiehallion (Sìdh Chailleann) is a prominent mountain in Perth and Kinross, Scotland.

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Schiehallion experiment

The Schiehallion experiment was an 18th-century experiment to determine the mean density of the Earth.

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Scientific Computer Applications

Scientific Computer Applications Inc. (SCAI) is a privately held, American company based in Tulsa, Oklahoma.

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Scientific visualization

Scientific visualization (also spelled scientific visualisation) is an interdisciplinary branch of science.

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Sea level

Mean sea level (MSL) (often shortened to sea level) is an average level of the surface of one or more of Earth's oceans from which heights such as elevations may be measured.

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Seattle–Tacoma International Airport

Seattle–Tacoma International Airport, also referred to as Sea–Tac Airport or Sea–Tac, is the primary commercial airport serving the Seattle metropolitan area in the U.S. state of Washington.

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Secondary flow

In fluid dynamics, a secondary flow is a relatively minor flow superimposed on the primary flow, where the primary flow usually matches very closely the flow pattern predicted using simple analytical techniques and assuming the fluid is inviscid.

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Semi-arid climate

A semi-arid climate or steppe climate is the climate of a region that receives precipitation below potential evapotranspiration, but not as low as a desert climate.

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September 1921 San Antonio floods

In early September 1921, the remnants of a Category 1 hurricane brought damaging floods to areas of Mexico and the U.S. state of Texas, particularly in the San Antonio region.

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Short-toed treecreeper

The short-toed treecreeper (Certhia brachydactyla) is a small passerine bird found in woodlands through much of the warmer regions of Europe and into north Africa.

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Sierra de las Quijadas National Park

The Sierra de las Quijadas National Park (Parque Nacional Sierra de las Quijadas) is a national park located in the northwestern part of the Argentine province of San Luis.

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Skew-T log-P diagram

A skew-T log-P diagram is one of four thermodynamic diagrams commonly used in weather analysis and forecasting.

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Slide Mountain (Ulster County, New York)

Slide Mountain is the highest peak in the Catskill Mountains of the U.S. state of New York.

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Soap bubble

A soap bubble is an extremely thin film of soapy water enclosing air that forms a hollow sphere with an iridescent surface.

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Soil conservation

Soil conservation is the preventing of soil loss from erosion or reduced fertility caused by over usage, acidification, salinization or other chemical soil contamination.

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Solenoid (meteorology)

In the context of meteorology, a solenoid is a tube-shaped region in the atmosphere where isobaric (constant pressure) and isopycnal (constant density) surfaces intersect, causing vertical circulation.

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Springside (Poughkeepsie, New York)

Springside was the estate of Matthew Vassar in Poughkeepsie, New York, United States.

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Station model

In meteorology, station models are symbolic illustrations showing the weather occurring at a given reporting station.

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Stereographic projection

In geometry, the stereographic projection is a particular mapping (function) that projects a sphere onto a plane.

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A stereoplotter uses stereo photographs to determine elevations.

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Streamlines, streaklines, and pathlines

Streamlines, streaklines and pathlines are field lines in a fluid flow.

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Stress–strain analysis

Stress–strain analysis (or stress analysis) is an engineering discipline that uses many methods to determine the stresses and strains in materials and structures subjected to forces.

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Superimposition is the placement of one thing over another, typically so that both are still evident.

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Superparamagnetic relaxometry

Superparamagnetic relaxometry (SPMR) is a technology combining the use of sensitive magnetic sensors and the superparamagnetic properties of magnetite nanoparticles (NP).

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Surface map

In mathematics, geology, and cartography, a surface map is a 2D perspective representation of a 3-dimensional surface.

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Surface weather analysis

Surface weather analysis is a special type of weather map that provides a view of weather elements over a geographical area at a specified time based on information from ground-based weather stations.

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Surface weather observation

Surface weather observations are the fundamental data used for safety as well as climatological reasons to forecast weather and issue warnings worldwide.

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Surfing is a surface water sport in which the wave rider, referred to as a surfer, rides on the forward or deep face of a moving wave, which is usually carrying the surfer towards the shore.

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Survey camp

Survey Camp is an army tradition that was discontinued in the later part of twentieth century but was reinstated in 2002 across the universities of the world with a whole new structure.

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Surveying or land surveying is the technique, profession, and science of determining the terrestrial or three-dimensional positions of points and the distances and angles between them.

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Swale (landform)

A swale is a low tract of land, especially one that is moist or marshy.

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Synoptic scale meteorology

The synoptic scale in meteorology (also known as large scale or cyclonic scale) is a horizontal length scale of the order of 1000 kilometers (about 620 miles) or more.

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Taiga (p; from Turkic), also known as boreal forest or snow forest, is a biome characterized by coniferous forests consisting mostly of pines, spruces and larches.

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A tephigram is one of four thermodynamic diagrams commonly used in weather analysis and forecasting.

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Terrain Contour Matching, or TERCOM, is a navigation system used primarily by cruise missiles.

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Thematic map

A thematic map is a type of map specifically designed to show a particular theme connected with a specific geographic area.

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Thermal bar

A thermal bar is a hydrodynamic feature that forms around the edges of holomictic lakes during the seasonal transition to stratified conditions, due to the shorter amount of time required for shallow areas of the lake to stratify.

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Thermodynamic diagrams

Thermodynamic diagrams are diagrams used to represent the thermodynamic states of a material (typically fluid) and the consequences of manipulating this material.

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Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of Earth.

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Tiger bush

Tiger bush or brousse tigrée is a patterned vegetation community and ground consisting of alternating bands of trees, shrubs, or grass separated by bare ground or low herb cover, that run roughly parallel to contour lines of equal elevation.

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Time of concentration

Time of concentration is a concept used in hydrology to measure the response of a watershed to a rain event.

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Timișoara (Temeswar, also formerly Temeschburg or Temeschwar; Temesvár,; טעמשוואר; Темишвар / Temišvar; Banat Bulgarian: Timišvár; Temeşvar; Temešvár) is the capital city of Timiș County, and the main social, economic and cultural centre in western Romania.

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Todd Gross

Todd Gross is a meteorologist.

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Topographic Atlas of Switzerland

The Topographic Atlas of Switzerland (German: Topographischer Atlas der Schweiz), also known as the Siegfried Atlas or Siegfried Map (German: Siegfriedkarte; French: Carte Siegfried) is an official map series of Switzerland.

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Topographic map

In modern mapping, a topographic map is a type of map characterized by large-scale detail and quantitative representation of relief, usually using contour lines, but historically using a variety of methods.

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Topographic Map of Switzerland

The Topographic Map of Switzerland (German: Topographische Karte der Schweiz), also known as the Dufour Map (German: Dufourkarte; French: Carte Dufour) is a 1:100 000 scale map series depicting Switzerland for the first time based on accurate geometric measurements.

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Topographic profile

A topographic profile or topographic cut is a representation of the relief of the terrain that is obtained by cutting transversely the lines of a topographic map.

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Topographic prominence

In topography, prominence characterizes the height of a mountain or hill's summit by the vertical distance between it and the lowest contour line encircling it but containing no higher summit within it.

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Topographic wetness index

The topographic wetness index (TWI), also known as the compound topographic index (CTI), is a steady state wetness index.

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Topography is the study of the shape and features of the surface of the Earth and other observable astronomical objects including planets, moons, and asteroids.

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Topological map

In cartography and geology, a topological map is a type of diagram that has been simplified so that only vital information remains and unnecessary detail has been removed.

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Torres del Paine National Park

Torres del Paine National Park (Parque Nacional Torres del Paine) is a national park encompassing mountains, glaciers, lakes, and rivers in southern Chilean Patagonia.

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A trail is usually a path, track or unpaved lane or road.

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Trident (UK nuclear programme)

Trident, also known as the Trident nuclear programme or Trident nuclear deterrent, covers the development, procurement and operation of nuclear weapons in the United Kingdom and their means of delivery.

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Tropical cyclone

A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain.

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Tropospheric propagation

Tropospheric propagation describes electromagnetic propagation in relation to the troposphere.

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TVMDC is a method for converting true, magnetic and compass headings.

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Two-dimensional nuclear magnetic resonance spectroscopy

Two-dimensional nuclear magnetic resonance spectroscopy (2D NMR) is a set of nuclear magnetic resonance spectroscopy (NMR) methods which give data plotted in a space defined by two frequency axes rather than one.

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United States Geological Survey

The United States Geological Survey (USGS, formerly simply Geological Survey) is a scientific agency of the United States government.

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United States Post Office (Canandaigua, New York)

The former U.S. Post Office in Canandaigua, New York, is located on North Main Street (New York state routes 21 and 332).

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Upper Harz Ditches

The Upper Harz Ditches (Oberharzer Gräben) are hillside ditches, running roughly parallel to the contour lines, that were laid out in the Upper Harz in Germany from the 16th to the 19th centuries to supply water power to the silver mines there.

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USGS Historical Topographic Maps for the Juneau Icefield area

The Juneau Icefield is a geological icefield located just north and east of Juneau, Alaska and continues north to the Skagway, Alaska area.

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Uturunku (Quechua for jaguar, Hispanicized spellings Uturunco, Uturuncu) is a dormant volcano in the Cordillera de Lípez in Potosí Department, Bolivia.

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Val Pola landslide

The Val Pola landslide (Val Pola rock avalanche) happened in Valtellina, Lombardy, Northern Italian Alps, on July 28, 1987 and resulted in the Valtellina disaster (destruction of villages, road closure, flooding threat) with the total cost of 400 million euros.

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Veusz is a scientific plotting package.

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Via Vandelli

Via Vandelli is a historical commercial and military road, designed and built in the 18th century by Domenico Vandelli under the reign of Francesco III d'Este between 1739 and 1752.

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The is a large volcanic mountain range in the German Central Uplands in the state of Hesse, separated from the Rhön Mountains by the Fulda river valley.

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Wattled curassow

The wattled curassow (Crax globulosa) is a threatened member of the family Cracidae, the curassows, guans, and chachalacas.

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Wave shoaling

In fluid dynamics, wave shoaling is the effect by which surface waves entering shallower water change in wave height.

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Weather front

A weather front is a boundary separating two masses of air of different densities, and is the principal cause of meteorological phenomena outside the tropics.

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Weather map

A weather map displays various meteorological features across a particular area at a particular point in time and has various symbols which all have specific meanings.

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Weißenberg (Frankenweide)

The Weißenberg in the Palatine Forest is a hill in the municipality of Merzalben (Südwestpfalz county, Rhineland-Pfalz).

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William Ernest Cooke

William Ernest Cooke (25 July 1863 – 7 November 1947), generally referred to as W. Ernest Cooke or informally Ernest Cooke, was an Australian astronomer, credited with a number of important scientific breakthroughs and improved methodologies in astronomical observations and star cataloguing.

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William Whiston

William Whiston (9 December 1667 – 22 August 1752) was an English theologian, historian, and mathematician, a leading figure in the popularisation of the ideas of Isaac Newton.

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Wind is the flow of gases on a large scale.

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Wind speed

Wind speed, or wind flow velocity, is a fundamental atmospheric quantity.

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Xiao Qian

Xiao Qian (27 January 1910 – 11 February 1999), alias Ruoping (若萍), was a famous essayist, editor, journalist and translator from China.

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The yellowhammer (Emberiza citrinella) is a passerine bird in the bunting family that is native to Eurasia and has been introduced to New Zealand and Australia.

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Zero-energy building

A zero-energy building, also known as a zero net energy (ZNE) building, net-zero energy building (NZEB), or net zero building, is a building with zero net energy consumption, meaning the total amount of energy used by the building on an annual basis is roughly equal to the amount of renewable energy created on the site, or in other definitions by renewable energy sources elsewhere.

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1701 in science

The year 1701 in science and technology involved some significant events.

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1987 Pacific hurricane season

The 1987 Pacific hurricane season was the last year in which the Eastern Pacific Hurricane Center was the primary warning center for tropical cyclones in the eastern Pacific Ocean.

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1993 Storm of the Century

The 1993 Storm of the Century (also known as the 93 Superstorm, The No Name Storm, or the Great Blizzard of 1993) was a large cyclonic storm that formed over the Gulf of Mexico on March 12, 1993.

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Aclinic Line, Aclinic line, Agonic line, Agonic lines, Agonie Lines, Contour Plot, Contour interval, Contour lines, Contour map, Contour maps, Contour plot, Contour-map, Equipotential curve, Halleyan line, Halleyan lines, Height Contours, Isallobar, Isarithm, Isobar (meteorology), Isocheim, Isoclinic Lines, Isoclinic line, Isodrosotherm, Isodynamic Lines, Isodynamic line, Isoflor, Isogon, Isogon (geomagnetism), Isogon (meteorology), Isogonic line, Isogonic lines, Isohel, Isohume, Isohyat, Isohyet, Isohyetal, Isohyetal line, Isohypse, Isohytes, Isolines, Isopleth, Isopleths, Isotach, Isotherm (contour line), Isotherms, Mathematical Contours.


[1] https://en.wikipedia.org/wiki/Contour_line

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