ศักย์โน้มถ่วง, Example:งาน (work) ต่อจำนวนของน้ำบริสุทธิ์ ที่ต้องใช้ในการเคลื่อนย้ายน้ำในดิน จากจุดหนึ่งไปยังอีกจุดหนึ่งที่มีความสูงแตกต่างกัน ดังสมการ Yz = r g z เมือ Yz คือ ศักย์โน้มถ่วง z คือ ระดับความสูงที่แตกต่างกัน r คือ ความหนาแน่นของน้ำ g คือ แรงโน้มถ่วง [สิ่งแวดล้อม]
(n) (physics) the law that states any two bodies attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them, Syn. Newton's law of gravitation
(n) (physics) the theory that any two particles of matter attract one another with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them, Syn. theory of gravity, Newton's theory of gravitation, gravitational theory
(n) (physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface; ; ; --Albert Einstein, Syn. gravitational force, gravitational attraction, gravitation, Example:the more remote the body the less the gravity; the gravitation between two bodies is proportional to the product of their masses and inversely proportional to the square of the distance between them; gravitation cannot be held responsible for people falling in love
n. [ Cf. F. gravitation. See Gravity. ] 1. The act of gravitating. [ 1913 Webster ]
2. (Pysics) That species of attraction or force by which all bodies or particles of matter in the universe tend toward each other; called also attraction of gravitation, universal gravitation, and universal gravity. See Attraction, and Weight. [ 1913 Webster ]
Law of gravitation, that law in accordance with which gravitation acts, namely, that every two bodies or portions of matter in the universe attract each other with a force proportional directly to the quantity of matter they contain, and inversely to the squares of their distances. [ 1913 Webster ]