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Difference between revisions of "Kepler's 2nd law"
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''''' Kepler's laws of planetary motion''''' 1609-1619 | ''''' Kepler's laws of planetary motion''''' 1609-1619 | ||
A line joining a planet and the Sun sweeps out equal areas during equal intervals of time. | |||
: $$\frac{d\theta}{dt} \propto \frac{1}{r^2}$$ | : $$\frac{d\theta}{dt} \propto \frac{1}{r^2}$$ | ||