law of areas
noun Astronomy.
See under Kepler's laws.
Words nearby law of areas
Definition for law of areas (2 of 2)
Kepler's law
noun Astronomy.
any one of three laws governing planetary motion: each planet revolves in an ellipse, with the sun at one focus; the line connecting a planet to the sun sweeps out equal areas in equal periods of time (law of areas); or the square of the period of revolution of each planet is proportional to the cube of the semimajor axis of the planet's orbit (harmonic law).
Origin of Kepler's law
after J.
Kepler