Kepler, Johannes
Kepler, Johannes (1571–1630) German mathematician and astronomer. He supported the heliocentric theory put forward by
Copernicus. Kepler succeeded Tycho
Brahe as imperial mathematician to Emperor Rudolf II. From Brahe's observations, he concluded that Mars moves in an elliptical orbit, and he went on to establish his three laws of planetary motion:
law one states that the orbit of a planet is an ellipse with the Sun at one of the foci;
law two (law of areas) states that the line joining the planet to the Sun (radius vector) sweeps out equal areas in equal times;
law 3 states that the square of the period of revolution (P) is directly proportional to the cube of the mean distance of the planet from the Sun. The
Rudolphine Tables (1627), based on Brahe's observations and Kepler's laws, remained the most accurate until the 18th century.
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Witchcraft, suspicious death, and planetary orbits.(Heavenly Intrigue: Johannes Kepler, Tycho Brahe, and the Murder behind One of History's Greatest Scientific Discoveries)(Kepler's Witch: An Astronomer's Discovery of Cosmic Order amid Religious War, Political Intrigue, and the Heresy Trial of his Mother)(Tycho and Kepler: The Unlikely Partnership that Forever Changed Our Understanding of the Heavens)(Book Review)
Magazine article from: Queen's Quarterly; 9/22/2005; ; 700+ words
; Tycho Brahe and Johannes Kepler each made an extraordinary contribution...assumption at the outset, they settle on Johannes Kepler as their prime suspect...is difficult not to feel sorry for Johannes Kepler. Ferguson provides a thoroughly...
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Spheres of influence.(Heavenly Intrigue: Johannes Kepler, Tycho Brahe, and the Murder Behind One of History's Greatest Scientific Discoveries)(Book Review)
Magazine article from: National Review; 7/26/2004; ; 700+ words
; Heavenly Intrigue: Johannes Kepler, Tycho Brahe, and the Murder Behind One of History's Greatest...two men who originated this scientific study of the heavens: Johannes Kepler and Tycho Brahe. Their efforts laid the groundwork for the...
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The Strange, Star-Crossed World of Johannes Kepler; Reviewed by John Gribbin
Newspaper article from: The Washington Post; 6/27/2004; 700+ words
; KEPLER'S WITCH An Astronomer's Discovery...402 pp. $24.95 HEAVENLY INTRIGUE Johannes Kepler, Tycho Brahe, and the Murder Behind...events in the life of the great astronomer Johannes Kepler but that Heavenly Intrigue, which...
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 "The Economist (US)")
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Kepler's world; The history of science.(How science emerged in the 17th century)(Johannes Kepler)
Magazine article from: The Economist (US); 8/15/2009; 700+ words
; Kepler moved it elliptically Celebrating the...400th anniversary of the publication by Johannes Kepler, a German mathematician and astronomer...the sun. Some six decades later when Kepler tackled the motion of Mars, he proposed...
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Heavenly Intrigue: Johannes Kepler, Tycho Brahe, and the Murder behind One of History's Greatest Scientific Discoveries.(Books: a selection of new and notable books of scientific interest)(Book Review)
Magazine article from: Science News; 6/12/2004; 622 words
; HEAVENLY INTRIGUE: Johannes Kepler, Tycho Brahe, and the Murder behind One of History's Greatest...ANNE-LEE GILDER The meeting of 17th-century astronomers Johannes Kepler and Tycho Brahe has long been considered opportune--until...
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Johannes Kepler University publishes research in photochemistry.
Newspaper article from: Chemicals & Chemistry; 11/6/2009; 659 words
; ...wrote B. Hager and colleagues, Johannes Kepler University. The researchers concluded...information, contact H. Falk, Johannes Kepler University Linz, Institute...Photochemistry and Photobiology, Johannes Kepler University. This article...
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Johannes Kepler University publishes research in metals.
Newspaper article from: Journal of Technology; 1/13/2009; 648 words
; ...wrote A. Kainz and colleagues, Johannes Kepler University. The researchers concluded...information, contact A. Kainz, Johannes Kepler University Linz, Institute...Geometry, MathematicsMetals, Johannes Kepler University. This article...
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Research from Johannes Kepler University yields new findings on DNA research.
Newspaper article from: Blood Weekly; 11/12/2009; 700+ words
; ...wrote M. Haeubl and colleagues, Johannes Kepler University. The researchers concluded...information, contact G. Knor, Johannes Kepler University Linz, Institute...Physiology, Spectroscopy, Surgery, Johannes Kepler University. This article...
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Research from Johannes Kepler University in the area of nanotechnology published.(Report)
Newspaper article from: Nanotechnology Weekly; 6/8/2009; 700+ words
; ...wrote J. Preiner and colleagues, Johannes Kepler University. The researchers concluded...information, contact P. Hinterdorfer, Johannes Kepler University Linz, Institute...England. Keywords: Nanotechnology, Johannes Kepler University. This article...
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Research from Johannes Kepler University broadens understanding of physics.
Newspaper article from: Physics Week; 10/13/2009; 594 words
; ...S.N. Markin and colleagues, Johannes Kepler University. The researchers concluded...information, contact S.N. Markin, Johannes Kepler University Linz, Institute...3844, USA. Keywords: Physics, Johannes Kepler University. This article...
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Johannes Kepler
Encyclopedia entry from: Encyclopedia of World Biography
Johannes Kepler The German astronomer Johannes Kepler (1571-1630) was one of the chief founders of modern...discovery of three basic laws underlying the motion of planets. Johannes Kepler was born on Dec. 27, 1571, in the Swabian town of...
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Kepler, Johannes
Encyclopedia entry from: U*X*L Encyclopedia of World Biography
Johannes Kepler Born: December 27, 1571 Weil, Swabia...German astronomer The German astronomer Johannes Kepler's discovery of three basic laws...its stars and planets). Early life Johannes Kepler was born on December 27, 1571...
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Kepler, Johannes (1571-1630)
Book article from: World of Earth Science
Kepler, Johannes (1571-1630) German astronomer Johannes Kepler, the astronomer who determined the laws of planetary motion, was born in Weil in W ü rtemberg (now southwestern Germany) and seemed destined for a life in the church...
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Kepler, Johannes (1571–1630)
Encyclopedia entry from: Europe, 1450 to 1789: Encyclopedia of the Early Modern World
KEPLER, JOHANNES (1571 – 1630) KEPLER, JOHANNES (1571 – 1630), German astronomer and mathematician; discoverer of the laws of planetary motion. Born into the Protestant minority in the free city of Weil der Stadt, within...
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Kepler, Johannes (1571–1630)
Book article from: The Renaissance
Kepler, Johannes (1571 – 1630) German astronomer...Weil, the son of a mercenary soldier, Kepler was educated at seminaries and the University...on different geometric shapes. In 1600 Kepler became an assistant to Tycho Brahe, court...
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