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Johannes
Kepler (1571--1630):
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Worked
with Tycho
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Good
at Math
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Wanted
to find simple mathematical relations to explain motions of planets
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Tycho
didn't like him because he wasn't convinced of Ptolemaic (geocentric) model.
Set him to work on Mars,
the most confusing planet at the time
-
Found
the solution to the orbits of the planets, doing
away with epicycles and the geocentric model. Gave best answers too.
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Kepler's
Three Laws
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Planets
orbit Sun in an ellipse
with the Sun at one focus
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A line
joining the planet to the Sun sweeps out equal
areas in equal
intervals of time
-
P2
= a3 (Period,
semi major axis)
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