ఆకర్షణ సిద్ధాంతాన్ని కనుగొన్నది ఎవరు?
In 1687, English mathematician Sir Isaac Newton published "Principia", which hypothesizes the inverse-square law of universal gravitation. In his own words, "I deduced that the forces which keep the planets in their orbs must [be] reciprocally as the squares of their distances from the centers about which they revolve: and thereby compared the force requisite to keep the Moon in her Orb with the force of gravity at the surface of the Earth; and found them answer pretty nearly." The equation is the following:
Sir Isaac Newton