"nongravitational forces" "niruhâ-ye nâgerâneši" (#) Fr.: "forces non-gravitationnelles" The forces of jets from a comet's nucleus that can cause a rocket-like effect and alter a comet's direction of motion slightly. → non-; → gravitational; → force. |
gravitational force niru-ye gerâneši (#) Fr.: force gravitationnelle The weakest of the four fundamental forces of nature. Described by → Newton's law of gravitation and subsequently by Einstein's → general relativity. → gravitational; → force. |