the principle that the radius vector drawn from a planet to the sun sweeps over equal areas in equal times.
See also: Conservation
conservation of areas
conservation of areas
[‚kän·sər′vā·shən əv ′er·ē·əz] (mechanics) A principle governing the motion of a body moving under the action of a central force, according to which a line joining the body with the center of force sweeps out equal areas in equal times.