Kepler's laws: Difference between revisions
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imported>Nachiketa (New page: '''Kepler's laws of planetary motion''', or simply, '''Kepler's laws''' are three laws stated by the astronomer Johannes Kepler. These laws govern the motion of the planets around ...) |
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'''Kepler's laws of planetary motion''', or simply | {{subpages}} | ||
'''Kepler's laws of planetary motion''', or simply '''Kepler's laws''', are three laws stated by the German [[astronomer]] [[Johannes Kepler]]. These laws govern the motion of the planets around the sun. Stated briefly, the laws are:<br /> | |||
# The orbit of a planet is [[ellipse|elliptical]], with the sun at one of the two foci of the ellipse. | # The orbit of a planet is [[ellipse|elliptical]], with the sun at one of the two foci of the ellipse. | ||
# The line joining a planet and the sun sweeps out equal areas in equal intervals of time. | # The line joining a planet and the sun sweeps out equal areas in equal intervals of time. | ||
# The square of the periodic time of a planet is directly proportional to the cube of the semi-major axis of its elliptical orbit. | # The square of the periodic time of a planet is directly proportional to the cube of the semi-major axis of its elliptical orbit. | ||
Revision as of 03:32, 1 March 2008
Kepler's laws of planetary motion, or simply Kepler's laws, are three laws stated by the German astronomer Johannes Kepler. These laws govern the motion of the planets around the sun. Stated briefly, the laws are:
- The orbit of a planet is elliptical, with the sun at one of the two foci of the ellipse.
- The line joining a planet and the sun sweeps out equal areas in equal intervals of time.
- The square of the periodic time of a planet is directly proportional to the cube of the semi-major axis of its elliptical orbit.