Faster access than browser!76 relations: Accuracy and precision, Age of the Earth, Basis point, Brass, Celsius, Centimetre, Century, Chemical engineering, Chemical shift, Chemistry, Coefficient, Cubic metre, Curie, Deformation (mechanics), Dimensionless quantity, Electrochemistry, Engineering, Fahrenheit, Finance, Fraction (mathematics), France, Gallon, Gram, Granularity, Inch, International Bureau of Weights and Measures, International Committee for Weights and Measures, International Electrotechnical Commission, International Organization for Standardization, International System of Units, International Union of Pure and Applied Physics, Laser rangefinder, Litre, Long and short scales, Mass fraction (chemistry), Metering pump, Metre, Metric prefix, Micro-, Micrometre, Milli-, Milligram per cent, Mole fraction, Names of large numbers, Nano-, National Institute of Standards and Technology, Nuclear magnetic resonance spectroscopy, Orders of magnitude (numbers), Particulates, Per mille, ..., Percentage, Physics, Pico-, Polychlorinated dibenzodioxins, Quotient, Radon, Rangefinder, Science, Standard deviation, Standards organization, Stepper motor, Technical writing, Temperature coefficient, Thermal expansion, Trichlorofluoromethane, Unit of measurement, United States customary units, United States Environmental Protection Agency, Uranium, Volume fraction, Volumetric flow rate, 1,000,000, 1,000,000,000, 10,000, 100 (number), 1000 (number). Expand index (26 more) »
Accuracy and precision
Precision is a description of random errors, a measure of statistical variability.
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Age of the Earth
The age of the Earth is 4.54 ± 0.05 billion years This age may represent the age of the Earth’s accretion, of core formation, or of the material from which the Earth formed.
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Basis point
A basis point (often denoted as bp, often pronounced as "bip" or "beep") is (a difference of) one hundredth of a percent or equivalently one ten thousandth.
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Brass
Brass is a metallic alloy that is made of copper and zinc.
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Celsius
The Celsius scale, previously known as the centigrade scale, is a temperature scale used by the International System of Units (SI).
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Centimetre
A centimetre (international spelling as used by the International Bureau of Weights and Measures; symbol cm) or centimeter (American spelling) is a unit of length in the metric system, equal to one hundredth of a metre, centi being the SI prefix for a factor of.
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Century
A century (from the Latin centum, meaning one hundred; abbreviated c.) is a period of 100 years.
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Chemical engineering
Chemical engineering is a branch of engineering that uses principles of chemistry, physics, mathematics and economics to efficiently use, produce, transform, and transport chemicals, materials and energy.
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Chemical shift
In nuclear magnetic resonance (NMR) spectroscopy, the chemical shift is the resonant frequency of a nucleus relative to a standard in a magnetic field.
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Chemistry
Chemistry is the scientific discipline involved with compounds composed of atoms, i.e. elements, and molecules, i.e. combinations of atoms: their composition, structure, properties, behavior and the changes they undergo during a reaction with other compounds.
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Christmas
Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.
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Christmas and holiday season
The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.
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Christmas Eve
Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.
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Christmas traditions
Christmas traditions vary from country to country.
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Coefficient
In mathematics, a coefficient is a multiplicative factor in some term of a polynomial, a series or any expression; it is usually a number, but may be any expression.
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Cubic metre
The cubic metre (in British English and international spelling as used by the International Bureau of Weights and Measures) or cubic meter (in American English) is the SI derived unit of volume.
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Curie
The curie (symbol Ci) is a non-SI unit of radioactivity originally defined in 1910.
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Deformation (mechanics)
Deformation in continuum mechanics is the transformation of a body from a reference configuration to a current configuration.
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Dimensionless quantity
In dimensional analysis, a dimensionless quantity is a quantity to which no physical dimension is assigned.
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Electrochemistry
Electrochemistry is the branch of physical chemistry that studies the relationship between electricity, as a measurable and quantitative phenomenon, and identifiable chemical change, with either electricity considered an outcome of a particular chemical change or vice versa.
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Engineering
Engineering is the creative application of science, mathematical methods, and empirical evidence to the innovation, design, construction, operation and maintenance of structures, machines, materials, devices, systems, processes, and organizations.
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Fahrenheit
The Fahrenheit scale is a temperature scale based on one proposed in 1724 by Dutch-German-Polish physicist Daniel Gabriel Fahrenheit (1686–1736).
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Finance
Finance is a field that is concerned with the allocation (investment) of assets and liabilities (known as elements of the balance statement) over space and time, often under conditions of risk or uncertainty.
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Fraction (mathematics)
A fraction (from Latin fractus, "broken") represents a part of a whole or, more generally, any number of equal parts.
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France
France, officially the French Republic (République française), is a sovereign state whose territory consists of metropolitan France in Western Europe, as well as several overseas regions and territories.
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Gallon
The gallon is a unit of measurement for fluid capacity in both the US customary units and the British imperial systems of measurement.
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Gram
The gram (alternative spelling: gramme; SI unit symbol: g) (Latin gramma, from Greek γράμμα, grámma) is a metric system unit of mass.
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Granularity
Granularity (also called graininess), the condition of existing in grains or granules, refers to the extent to which a material or system is composed of distinguishable pieces or grains.
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Inch
The inch (abbreviation: in or &Prime) is a unit of length in the (British) imperial and United States customary systems of measurement now formally equal to yard but usually understood as of a foot.
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International Bureau of Weights and Measures
The International Bureau of Weights and Measures (Bureau international des poids et mesures) is an intergovernmental organization established by the Metre Convention, through which Member States act together on matters related to measurement science and measurement standards.
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International Committee for Weights and Measures
The International Committee for Weights and Measures (abbreviated CIPM from the French Comité international des poids et mesures) consists of eighteen persons, each of a different nationality, from Member States of the Metre Convention (Convention du Mètre) appointed by the General Conference on Weights and Measures (CGPM) whose principal task is to promote worldwide uniformity in units of measurement by taking direct action or by submitting proposals to the CGPM.
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International Electrotechnical Commission
The International Electrotechnical Commission (IEC; in French: Commission électrotechnique internationale) is an international standards organization that prepares and publishes International Standards for all electrical, electronic and related technologies – collectively known as "electrotechnology".
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International Organization for Standardization
The International Organization for Standardization (ISO) is an international standard-setting body composed of representatives from various national standards organizations.
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International System of Units
The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system, and is the most widely used system of measurement.
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International Union of Pure and Applied Physics
The International Union of Pure and Applied Physics (IUPAP) is an international non-governmental organization whose mission is to assist in the worldwide development of physics, to foster international cooperation in physics, and to help in the application of physics toward solving problems of concern to humanity.
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Laser rangefinder
A laser rangefinder is a rangefinder that uses a laser beam to determine the distance to an object.
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Litre
The litre (SI spelling) or liter (American spelling) (symbols L or l, sometimes abbreviated ltr) is an SI accepted metric system unit of volume equal to 1 cubic decimetre (dm3), 1,000 cubic centimetres (cm3) or 1/1,000 cubic metre. A cubic decimetre (or litre) occupies a volume of 10 cm×10 cm×10 cm (see figure) and is thus equal to one-thousandth of a cubic metre. The original French metric system used the litre as a base unit. The word litre is derived from an older French unit, the litron, whose name came from Greek — where it was a unit of weight, not volume — via Latin, and which equalled approximately 0.831 litres. The litre was also used in several subsequent versions of the metric system and is accepted for use with the SI,, p. 124. ("Days" and "hours" are examples of other non-SI units that SI accepts.) although not an SI unit — the SI unit of volume is the cubic metre (m3). The spelling used by the International Bureau of Weights and Measures is "litre", a spelling which is shared by almost all English-speaking countries. The spelling "liter" is predominantly used in American English. One litre of liquid water has a mass of almost exactly one kilogram, because the kilogram was originally defined in 1795 as the mass of one cubic decimetre of water at the temperature of melting ice. Subsequent redefinitions of the metre and kilogram mean that this relationship is no longer exact.
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Long and short scales
The long and short scales are two of several large-number naming systems for integer powers of ten that use the same words with different meanings.
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Mass fraction (chemistry)
In chemistry, the mass fraction w_i is the ratio of one substance with mass m_i to the mass of the total mixture m_\text, defined as The symbol Y_i is also used to denote mass fraction.
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Metering pump
A metering pump moves a precise volume of liquid in a specified time period providing an accurate volumetric flow rate.
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Metre
The metre (British spelling and BIPM spelling) or meter (American spelling) (from the French unit mètre, from the Greek noun μέτρον, "measure") is the base unit of length in some metric systems, including the International System of Units (SI).
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Metric prefix
A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or fraction of the unit.
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Micro-
Micro- (symbol µ) is a unit prefix in the metric system denoting a factor of 10−6 (one millionth).
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Micrometre
The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equaling (SI standard prefix "micro-".
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Milli-
Milli- (symbol m) is a unit prefix in the metric system denoting a factor of one thousandth (10−3).
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Milligram per cent
Milligram per cent is a traditional symbol used to denote a unit of measure of concentration.
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Mole fraction
In chemistry, the mole fraction or molar fraction (xi) is defined as the amount of a constituent (expressed in moles), ni, divided by the total amount of all constituents in a mixture (also expressed in moles), ntot: The sum of all the mole fractions is equal to 1: The same concept expressed with a denominator of 100 is the mole percent or molar percentage or molar proportion (mol%).
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Names of large numbers
This article lists and discusses the usage and derivation of names of large numbers, together with their possible extensions.
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Nano-
Nano- (symbol n) is a unit prefix meaning "one billionth".
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National Institute of Standards and Technology
The National Institute of Standards and Technology (NIST) is one of the oldest physical science laboratories in the United States.
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New Year
New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.
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New Year's Day
New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.
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New Year's Eve
In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.
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Nuclear magnetic resonance spectroscopy
Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy or magnetic resonance spectroscopy (MRS), is a spectroscopic technique to observe local magnetic fields around atomic nuclei.
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Orders of magnitude (numbers)
This list contains selected positive numbers in increasing order, including counts of things, dimensionless quantity and probabilities.
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Particulates
Atmospheric aerosol particles, also known as atmospheric particulate matter, particulate matter (PM), particulates, or suspended particulate matter (SPM) are microscopic solid or liquid matter suspended in Earth's atmosphere.
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Per mille
A per milleCambridge Dictionary Online.
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Percentage
In mathematics, a percentage is a number or ratio expressed as a fraction of 100.
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Physics
Physics (from knowledge of nature, from φύσις phýsis "nature") is the natural science that studies matterAt the start of The Feynman Lectures on Physics, Richard Feynman offers the atomic hypothesis as the single most prolific scientific concept: "If, in some cataclysm, all scientific knowledge were to be destroyed one sentence what statement would contain the most information in the fewest words? I believe it is that all things are made up of atoms – little particles that move around in perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into one another..." and its motion and behavior through space and time and that studies the related entities of energy and force."Physical science is that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events." Physics is one of the most fundamental scientific disciplines, and its main goal is to understand how the universe behaves."Physics is one of the most fundamental of the sciences. Scientists of all disciplines use the ideas of physics, including chemists who study the structure of molecules, paleontologists who try to reconstruct how dinosaurs walked, and climatologists who study how human activities affect the atmosphere and oceans. Physics is also the foundation of all engineering and technology. No engineer could design a flat-screen TV, an interplanetary spacecraft, or even a better mousetrap without first understanding the basic laws of physics. (...) You will come to see physics as a towering achievement of the human intellect in its quest to understand our world and ourselves."Physics is an experimental science. Physicists observe the phenomena of nature and try to find patterns that relate these phenomena.""Physics is the study of your world and the world and universe around you." Physics is one of the oldest academic disciplines and, through its inclusion of astronomy, perhaps the oldest. Over the last two millennia, physics, chemistry, biology, and certain branches of mathematics were a part of natural philosophy, but during the scientific revolution in the 17th century, these natural sciences emerged as unique research endeavors in their own right. Physics intersects with many interdisciplinary areas of research, such as biophysics and quantum chemistry, and the boundaries of physics are not rigidly defined. New ideas in physics often explain the fundamental mechanisms studied by other sciences and suggest new avenues of research in academic disciplines such as mathematics and philosophy. Advances in physics often enable advances in new technologies. For example, advances in the understanding of electromagnetism and nuclear physics led directly to the development of new products that have dramatically transformed modern-day society, such as television, computers, domestic appliances, and nuclear weapons; advances in thermodynamics led to the development of industrialization; and advances in mechanics inspired the development of calculus.
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Pico-
Pico- (symbol p) is a unit prefix in the metric system denoting one trillionth, a factor of 10−12.
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Polychlorinated dibenzodioxins
Polychlorinated dibenzodioxins (PCDDs), or simply dioxins, are a group of polyhalogenated organic compounds that are significant environmental pollutants.
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Quotient
In arithmetic, a quotient (from quotiens "how many times", pronounced) is the quantity produced by the division of two numbers.
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Radon
Radon is a chemical element with symbol Rn and atomic number 86.
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Rangefinder
A rangefinder is a device that measures distance from the observer to a target, in a process called ranging.
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Science
R. P. Feynman, The Feynman Lectures on Physics, Vol.1, Chaps.1,2,&3.
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Standard deviation
In statistics, the standard deviation (SD, also represented by the Greek letter sigma σ or the Latin letter s) is a measure that is used to quantify the amount of variation or dispersion of a set of data values.
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Standards organization
A standards organization, standards body, standards developing organization (SDO), or standards setting organization (SSO) is an organization whose primary activities are developing, coordinating, promulgating, revising, amending, reissuing, interpreting, or otherwise producing technical standards that are intended to address the needs of a group of affected adopters.
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Stepper motor
A stepper motor or step motor or stepping motor is a brushless DC electric motor that divides a full rotation into a number of equal steps.
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Technical writing
Technical writing is any written form of writing or drafting technical communication used in a variety of technical and occupational fields, such as computer hardware and software, engineering, chemistry, aeronautics, robotics, finance, medical, consumer electronics, and biotechnology.
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Temperature coefficient
A temperature coefficient describes the relative change of a physical property that is associated with a given change in temperature.
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Thermal expansion
Thermal expansion is the tendency of matter to change in shape, area, and volume in response to a change in temperature.
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Trichlorofluoromethane
Trichlorofluoromethane, also called freon-11, CFC-11, or R-11, is a chlorofluorocarbon.
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Unit of measurement
A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity.
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United States customary units
United States customary units are a system of measurements commonly used in the United States.
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United States Environmental Protection Agency
The Environmental Protection Agency is an independent agency of the United States federal government for environmental protection.
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Uranium
Uranium is a chemical element with symbol U and atomic number 92.
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Volume fraction
In chemistry, the volume fraction φi is defined as the volume of a constituent Vi divided by the volume of all constituents of the mixture V prior to mixing: Being dimensionless, its unit is 1; it is expressed as a number, e.g., 0.18.
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Volumetric flow rate
In physics and engineering, in particular fluid dynamics and hydrometry, the volumetric flow rate (also known as volume flow rate, rate of fluid flow or volume velocity) is the volume of fluid which passes per unit time; usually represented by the symbol (sometimes). The SI unit is m3/s (cubic metres per second).
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1,000,000
1,000,000 (one million), or one thousand thousand, is the natural number following 999,999 and preceding 1,000,001.
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1,000,000,000
1,000,000,000 (one billion, short scale; one thousand million or milliard, yard, long scale) is the natural number following 999,999,999 and preceding 1,000,000,001.
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10,000
10,000 (ten thousand) is the natural number following 9,999 and preceding 10,001.
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100 (number)
100 or one hundred (Roman numeral: Ⅽ) is the natural number following 99 and preceding 101.
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1000 (number)
1000 or one thousand is the natural number following 999 and preceding 1001.
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2018
2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.
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2019
2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.
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Redirects here:
1 Billionth, 1 Over 10^9, Part Per Billion, Part per hundred, Part per million, Parts per billion, Parts per hundred, Parts per million, Parts per million (ppm), Parts per notation, Parts per quadrillion, Parts per ten, Parts per ten thousand, Parts per thousand, Parts per trillion, Parts-per-trillion, Ppbv, Ppmv, Uno (IUPAP), Uno (unit), ㏙.
References
[1] https://en.wikipedia.org/wiki/Parts-per_notation
