Friday, 16 September 2011

KEPLER'S LAWS


First Law:
“The orbits of planets are elliptical with the Sun at one of their two foci.”

Second Law:
“The area swept by a line, joining the Sun to a planet, per unit time ( known as areal velocity of the planet ) is constant.”

Third Law:
“The square of the periodic time ( T ) of any planet is directly proportional to the cube of the semi-major axis
(a) of its elliptical orbit.

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