Isaac Newton The Gravity Finder
The common story among a large group of people at the beginning of Newton's discovery of the Law of Attraction is that when he was sitting under an apple tree in the garden, an apple was vertical on his head. That writer William Stockley said he sat with Newton under some apple trees. Newton told him that he was sitting contemplating the same situation, when the apple fell on his head and then asked immediately what power had made the apple fall on the ground perpendicularly, why did not go right or north or climb up, prompting him to develop the law of gravity , By creating a mathematical equation determined by Gu The attraction between any two objects has a mass. [1] [2] Isaac Newton defined the force of gravity in his book "Principa" in the following way: Every particle in the material in the universe attracts the other particle with a force directly proportional to the output of the mass of the particles and vice versa with the space between them. It is noteworthy that Newton is the one who called "Gravity" Gravity, relative to the Latin word "Gravitas" literally means weight or weight. [3] The first contributions to the discovery of gravity Aristotle : Aristotle considered that every celestial body follows a certain natural movement not affected by external causes or factors. In addition, large Earth objects have a natural tendency to move towards the center of the Earth. [4] Galileo Galilei began to test the hypothesis that objects fall as they are not because of their weight but as a result of the force of gravity, so the acceleration of these objects is equal regardless of their weights, and the experiment of rolling several objects of different weights on the surface slanted down, Experience that all objects fell with the same acceleration regardless of their weights. [1] [2] Contributions by Albert Einstein In the early twentieth century Einstein introduced a new concept of gravity, and could not invalidate the laws of Newton, but showed the limited mechanics in describing the behavior of certain phenomena and things, and saw that gravity on the ground as described by Isaac Newton more than three centuries ago. [1] Definition of gravity The gravity earth is what makes a man fall to the ground if you jump and make things fall to the ground when you throw it , as it is a subtle force pulls things toward each other, and that keeps the human fixed on the ground, and possesses all the body has attractive mass, the more mass increased gravity has increased. Earth's gravity comes from its massive mass. Gravity is very important to all living organisms and can not be lived without. It keeps the Earth in its proper solar orbit, so that the sun reaches the right amount of the earth, keeps the atmosphere stable, Alive. [5]