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Select > Who • What • When • Where • Which |
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Johannes Kepler, Laws Planetary Motion > 
Johannes Kepler is now chiefly remembered for discovering the three laws of planetary motion that bear his name published in 1609 and 1619). He also did important work in optics (1604, 1611), discovered two new regular polyhedra (1619), gave the first mathematical treatment of close packing of equal spheres (leading to an explanation of the shape of the cells of a honeycomb, 1611), gave the first proof of how logarithms worked (1624), and devised a method of finding the volumes of solids of revolution that (with hindsight!) can be seen as contributing to the development of calculus (1615, 1616). Moreover, he calculated the most exact astronomical tables hitherto known, whose continued accuracy did much to establish the truth of heliocentric astronomy
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More on this Website >
• http://www-groups.dcs.st-and.a ... aticians/Kepler.html
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Ptolemy, Astronomer / Geographer
Claudius Ptolemy lived in Alexandria (in Egypt) from approx. 87 -150 AD. He was an astronomer, mathematician and geographer. He codified the Greek geocentric view of the... |
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Copernicus, Earth moves around the Sun
Nicolaus Copernicus was an astronomer who provided the first modern formulation of a heliocentric (sun-centered) theory of the solar system in his epochal book, De revolu... |
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Tycho Brahe
Tycho Brahe was born in Skane, then in Denmark, now in Sweden. His contributions to astronomy were enormous. He not only designed and built instruments, he also calibrate... |
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Galileo Timeline
A detailed chronology of Galileo's life. Galileo invented many mechanical devices other than the pump, such as the hydrostatic balance. But perhaps his most famous invent... |
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