Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Download
Faster access than browser!
 

Jacobus Kapteyn

Index Jacobus Kapteyn

Prof Jacobus Cornelius Kapteyn FRS FRSE LLD (19 January 1851 – 18 June 1922) was a Dutch astronomer. [1]

57 relations: Amsterdam, Apparent magnitude, Asteroid, Astronomy, Barnard's Star, Barneveld (town), Bertil Lindblad, Bruce Medal, Canary Islands, David Gill (astronomer), Durchmusterung, Ejnar Hertzsprung, Extinction (astronomy), Fellow of the Royal Society of Edinburgh, Galactic Center, Galactic coordinate system, Galactic plane, Galaxy, Galaxy rotation curve, Gold Medal of the Royal Astronomical Society, Interstellar medium, Isaac Newton Group of Telescopes, Jacobus Kapteyn Telescope, James Craig Watson Medal, Jan Oort, Jan Veth, Kapteyn (crater), Kapteyn Astronomical Institute, Kapteyn's Star, La Palma, Leiden Observatory, Light-year, Mathematics, Mechanics, Milky Way, Moon, Netherlands, Photographic plate, Physics, Professor, Proper motion, Radial velocity, Retirement, Robert Julius Trumpler, Royal Netherlands Academy of Arts and Sciences, Royal Observatory, Cape of Good Hope, Royal Society, Southern Hemisphere, Springer Science+Business Media, Star, ..., Stellar classification, Sun, Thesis, University of Groningen, Utrecht University, Willem de Sitter, 818 Kapteynia. Expand index (7 more) »

Amsterdam

Amsterdam is the capital and most populous municipality of the Netherlands.

New!!: Jacobus Kapteyn and Amsterdam · See more »

Apparent magnitude

The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.

New!!: Jacobus Kapteyn and Apparent magnitude · See more »

Asteroid

Asteroids are minor planets, especially those of the inner Solar System.

New!!: Jacobus Kapteyn and Asteroid · See more »

Astronomy

Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.

New!!: Jacobus Kapteyn and Astronomy · See more »

Barnard's Star

Barnard's Star is a very-low-mass red dwarf about 6 light-years away from Earth in the constellation of Ophiuchus.

New!!: Jacobus Kapteyn and Barnard's Star · See more »

Barneveld (town)

Barneveld is a town in the Dutch province of Gelderland and also the administrative center of the eponymous municipality.

New!!: Jacobus Kapteyn and Barneveld (town) · See more »

Bertil Lindblad

Bertil Lindblad (Örebro, 26 November 1895 – Saltsjöbaden, outside Stockholm, 25 June 1965) was a Swedish astronomer.

New!!: Jacobus Kapteyn and Bertil Lindblad · See more »

Bruce Medal

The Catherine Wolfe Bruce Gold Medal is awarded every year by the Astronomical Society of the Pacific for outstanding lifetime contributions to astronomy.

New!!: Jacobus Kapteyn and Bruce Medal · See more »

Canary Islands

The Canary Islands (Islas Canarias) is a Spanish archipelago and autonomous community of Spain located in the Atlantic Ocean, west of Morocco at the closest point.

New!!: Jacobus Kapteyn and Canary Islands · See more »

David Gill (astronomer)

Sir David Gill (12 June 1843 – 24 January 1914) was a Scottish astronomer who is known for measuring astronomical distances, for astrophotography, and for geodesy.

New!!: Jacobus Kapteyn and David Gill (astronomer) · See more »

Durchmusterung

In astronomy, Durchmusterung or Bonner Durchmusterung (BD), is the comprehensive astrometric star catalogue of the whole sky, compiled by the Bonn Observatory (Germany) from 1859 to 1903.

New!!: Jacobus Kapteyn and Durchmusterung · See more »

Ejnar Hertzsprung

Ejnar Hertzsprung (8 October 1873 – 21 October 1967) was a Danish chemist and astronomer born in Copenhagen.

New!!: Jacobus Kapteyn and Ejnar Hertzsprung · See more »

Extinction (astronomy)

In astronomy, extinction is the absorption and scattering of electromagnetic radiation by dust and gas between an emitting astronomical object and the observer.

New!!: Jacobus Kapteyn and Extinction (astronomy) · See more »

Fellow of the Royal Society of Edinburgh

Fellowship of the Royal Society of Edinburgh (FRSE) is an award granted to individuals that the Royal Society of Edinburgh, Scotland judges to be "eminently distinguished in their subject".

New!!: Jacobus Kapteyn and Fellow of the Royal Society of Edinburgh · See more »

Galactic Center

The Galactic Center is the rotational center of the Milky Way.

New!!: Jacobus Kapteyn and Galactic Center · See more »

Galactic coordinate system

The galactic coordinate system is a celestial coordinate system in spherical coordinates, with the Sun as its center, the primary direction aligned with the approximate center of the Milky Way galaxy, and the fundamental plane parallel to an approximation of the galactic plane but offset to its north.

New!!: Jacobus Kapteyn and Galactic coordinate system · See more »

Galactic plane

The galactic plane is the plane on which the majority of a disk-shaped galaxy's mass lies.

New!!: Jacobus Kapteyn and Galactic plane · See more »

Galaxy

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.

New!!: Jacobus Kapteyn and Galaxy · See more »

Galaxy rotation curve

The rotation curve of a disc galaxy (also called a velocity curve) is a plot of the orbital speeds of visible stars or gas in that galaxy versus their radial distance from that galaxy's centre.

New!!: Jacobus Kapteyn and Galaxy rotation curve · See more »

Gold Medal of the Royal Astronomical Society

The Gold Medal of the Royal Astronomical Society (RAS) is the highest award given by the RAS.

New!!: Jacobus Kapteyn and Gold Medal of the Royal Astronomical Society · See more »

Interstellar medium

In astronomy, the interstellar medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy.

New!!: Jacobus Kapteyn and Interstellar medium · See more »

Isaac Newton Group of Telescopes

The Isaac Newton Group of Telescopes or ING operates three optical telescopes -- the William Herschel, Isaac Newton, and Jacobus Kapteyn Telescopes -- for the Science and Technology Facilities Council (ST), Jacobus Kapteyn Telescope NWO and the IAC.

New!!: Jacobus Kapteyn and Isaac Newton Group of Telescopes · See more »

Jacobus Kapteyn Telescope

The Jacobus Kapteyn Telescope or JKT is a 1-metre optical telescope named for the Dutch astronomer Jacobus Kapteyn of the Isaac Newton Group of Telescopes at the Roque de los Muchachos Observatory on La Palma in the Canary Islands, Spain.

New!!: Jacobus Kapteyn and Jacobus Kapteyn Telescope · See more »

James Craig Watson Medal

James Craig Watson Medal The James Craig Watson Medal was established by the bequest of James Craig Watson, and is awarded by the U.S. National Academy of Sciences for contributions to astronomy.

New!!: Jacobus Kapteyn and James Craig Watson Medal · See more »

Jan Oort

Jan Hendrik Oort (or; 28 April 1900 – 5 November 1992) was a Dutch astronomer who made significant contributions to the understanding of the Milky Way and who was a pioneer in the field of radio astronomy.

New!!: Jacobus Kapteyn and Jan Oort · See more »

Jan Veth

Jan Pieter Veth (18 May 1864, Dordrecht – 1 July 1925, Amsterdam) was a Dutch painter, poet, art critic and university lecturer.

New!!: Jacobus Kapteyn and Jan Veth · See more »

Kapteyn (crater)

Kapetyn is a lunar impact crater that is near the eastern limb of the Moon, to the west of the crater La Pérouse.

New!!: Jacobus Kapteyn and Kapteyn (crater) · See more »

Kapteyn Astronomical Institute

The Kapteyn Astronomical Institute is the department of astronomy of the University of Groningen in the Netherlands.

New!!: Jacobus Kapteyn and Kapteyn Astronomical Institute · See more »

Kapteyn's Star

Kapteyn's Star is a class M1 red subdwarf about 12.76 light years from Earth in the southern constellation Pictor; it is the closest halo star to the Solar System.

New!!: Jacobus Kapteyn and Kapteyn's Star · See more »

La Palma

La Palma, also San Miguel de La Palma, is the most north-westerly island of the Canary Islands, Spain.

New!!: Jacobus Kapteyn and La Palma · See more »

Leiden Observatory

Leiden Observatory (Sterrewacht Leiden in Dutch) is an astronomical observatory in the city of Leiden, the Netherlands.

New!!: Jacobus Kapteyn and Leiden Observatory · See more »

Light-year

The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.

New!!: Jacobus Kapteyn and Light-year · See more »

Mathematics

Mathematics (from Greek μάθημα máthēma, "knowledge, study, learning") is the study of such topics as quantity, structure, space, and change.

New!!: Jacobus Kapteyn and Mathematics · See more »

Mechanics

Mechanics (Greek μηχανική) is that area of science concerned with the behaviour of physical bodies when subjected to forces or displacements, and the subsequent effects of the bodies on their environment.

New!!: Jacobus Kapteyn and Mechanics · See more »

Milky Way

The Milky Way is the galaxy that contains our Solar System.

New!!: Jacobus Kapteyn and Milky Way · See more »

Moon

The Moon is an astronomical body that orbits planet Earth and is Earth's only permanent natural satellite.

New!!: Jacobus Kapteyn and Moon · See more »

Netherlands

The Netherlands (Nederland), often referred to as Holland, is a country located mostly in Western Europe with a population of seventeen million.

New!!: Jacobus Kapteyn and Netherlands · See more »

Photographic plate

Photographic plates preceded photographic film as a capture medium in photography.

New!!: Jacobus Kapteyn and Photographic plate · See more »

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.

New!!: Jacobus Kapteyn and Physics · See more »

Professor

Professor (commonly abbreviated as Prof.) is an academic rank at universities and other post-secondary education and research institutions in most countries.

New!!: Jacobus Kapteyn and Professor · See more »

Proper motion

Proper motion is the astronomical measure of the observed changes in the apparent places of stars or other celestial objects in the sky, as seen from the center of mass of the Solar System, compared to the abstract background of the more distant stars.

New!!: Jacobus Kapteyn and Proper motion · See more »

Radial velocity

The radial velocity of an object with respect to a given point is the rate of change of the distance between the object and the point.

New!!: Jacobus Kapteyn and Radial velocity · See more »

Retirement

Retirement is the withdrawal from one's position or occupation or from one's active working life.

New!!: Jacobus Kapteyn and Retirement · See more »

Robert Julius Trumpler

Robert Julius Trumpler (until 1915 Robert Trümpler, born October 2, 1886 in Zürich, Switzerland; died September 10, 1956 in Berkeley, United States) was a Swiss-American astronomer.

New!!: Jacobus Kapteyn and Robert Julius Trumpler · See more »

Royal Netherlands Academy of Arts and Sciences

The Royal Netherlands Academy of Arts and Sciences (Koninklijke Nederlandse Akademie van Wetenschappen, abbreviated: KNAW) is an organization dedicated to the advancement of science and literature in the Netherlands.

New!!: Jacobus Kapteyn and Royal Netherlands Academy of Arts and Sciences · See more »

Royal Observatory, Cape of Good Hope

The Royal Observatory, Cape of Good Hope, is the oldest continuously existing scientific institution in South Africa.

New!!: Jacobus Kapteyn and Royal Observatory, Cape of Good Hope · See more »

Royal Society

The President, Council and Fellows of the Royal Society of London for Improving Natural Knowledge, commonly known as the Royal Society, is a learned society.

New!!: Jacobus Kapteyn and Royal Society · See more »

Southern Hemisphere

The Southern Hemisphere is the half of Earth that is south of the Equator.

New!!: Jacobus Kapteyn and Southern Hemisphere · See more »

Springer Science+Business Media

Springer Science+Business Media or Springer, part of Springer Nature since 2015, is a global publishing company that publishes books, e-books and peer-reviewed journals in science, humanities, technical and medical (STM) publishing.

New!!: Jacobus Kapteyn and Springer Science+Business Media · See more »

Star

A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.

New!!: Jacobus Kapteyn and Star · See more »

Stellar classification

In astronomy, stellar classification is the classification of stars based on their spectral characteristics.

New!!: Jacobus Kapteyn and Stellar classification · See more »

Sun

The Sun is the star at the center of the Solar System.

New!!: Jacobus Kapteyn and Sun · See more »

Thesis

A thesis or dissertation is a document submitted in support of candidature for an academic degree or professional qualification presenting the author's research and findings.

New!!: Jacobus Kapteyn and Thesis · See more »

University of Groningen

The University of Groningen (abbreviated as UG; Rijksuniversiteit Groningen, abbreviated as RUG) is a public research university in the city of Groningen in the Netherlands.

New!!: Jacobus Kapteyn and University of Groningen · See more »

Utrecht University

Utrecht University (UU; Universiteit Utrecht, formerly Rijksuniversiteit Utrecht) is a university in Utrecht, the Netherlands.

New!!: Jacobus Kapteyn and Utrecht University · See more »

Willem de Sitter

Willem de Sitter (6 May 1872 – 20 November 1934) was a Dutch mathematician, physicist, and astronomer.

New!!: Jacobus Kapteyn and Willem de Sitter · See more »

818 Kapteynia

818 Kapteynia is a minor planet orbiting the Sun.

New!!: Jacobus Kapteyn and 818 Kapteynia · See more »

Redirects here:

J.C. Kapteyn, Jacobus Cornelius Kapteyn, Jacobus H. Kapteyn.

References

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

OutgoingIncoming
Hey! We are on Facebook now! »