One day, he was sitting under an apple tree to rest when a ripe apple fell and hit him on the head. When Newton touched his injured place, he thought of a question: When he threw the ball into the air, why didn't it keep rising, but kept falling?
Newton picked up the apple and suddenly had a strange idea. Is there an invisible force at work, dragging the apple to the ground? After a long time, Newton finally solved this problem and deduced a formula, that is, the law of universal gravitation.
He thinks that every object in the world has an invisible attraction to attract other objects. Heavy objects are more attractive than light objects. The earth on which we live is much bigger and heavier than anything on it. So all objects thrown up will eventually fall to the ground. This is the result of gravity of the earth.
Newton's discovery can not only explain the physical phenomena on the earth, but also explain the phenomena between the universe and celestial bodies. There are many other planets besides the earth, such as the sun, the moon, Mars and Jupiter. They are all attracted by gravity, so the moon goes around the earth and the earth goes around the sun.
It is this gravity that fixes them in their respective positions, so that although they move under the same sky, they will not collide.
The little apple gave Newton great inspiration. In fact, the same phenomenon has long been commonplace in the eyes of others, but others don't take it seriously. Only Newton discovered the law of gravity through his own thinking.
Extended data
Newton's apple tree was inspired by Newton, a great British scientist, because the apple fell from the tree. This apple tree is very famous and is considered as a symbol of the spirit of scientific exploration. In fact, this is a legendary story in the history of science. The apple tree, which made Newton understand the law of gravity, is famous and regarded as a symbol of the spirit of scientific exploration.
Isaac newton is a great British mathematician, physicist, astronomer and natural philosopher. His research fields include physics, mathematics, astronomy, theology, natural philosophy and alchemy.
Newton's main contributions include inventing calculus, discovering the law of universal gravitation and classical mechanics, designing and actually manufacturing the first reflective telescope, and so on. He is regarded as the greatest and most influential scientist in human history. In order to commemorate Newton's outstanding achievements in classical mechanics, "Newton" later became a physical unit to measure the size of force.
Baidu Encyclopedia-Newton Apple Tree