Three months before Newton was born, his father died. When he was two years old, his mother remarried to a priest and left Newton to his grandmother. 1 1 years old, my mother's step hubband passed away, and my mother returned to Newton with a son and two daughters born with step hubband. Newton was taciturn and stubborn since childhood, which may come from his family situation.
From about the age of five, Newton was sent to public schools. Newton was not a child prodigy when he was a teenager. He has average qualifications and average grades, but he likes reading books, reading books that introduce various simple mechanical model making methods, and being inspired by them, he makes some strange gadgets by himself, such as windmills, wooden clocks, folding lanterns and so on.
Legend has it that young Newton made a model of the mill after thoroughly understanding the mechanical principle of the windmill. He tied the mouse to a treadmill with wheels, and then put a corn in front of the wheel, just out of the mouse's reach. The mouse wants to eat corn, so it keeps running, so the wheel keeps turning; Once again, when he was flying a kite, he hung a small lamp on the rope. In the evening, the villagers were surprised to find that a comet appeared. He also made a small water clock. Every morning, the water bell will automatically drop water on his face to wake him up. He also likes painting and carving, especially carving sundials. His sundial was placed in the corner of his house and everywhere on the windowsill to observe the movement of the shadow.
Newton entered Grantham Middle School not far from home at the age of 12. Newton's mother had hoped that he would become a farmer, but Newton himself had no intention of doing so and loved reading. As he grew older, Newton became more and more fond of reading, meditating and doing small scientific experiments. When he was studying in Grantham Middle School, he lived in a pharmacist's house, which influenced him by chemical experiments.
Newton's academic performance in middle school is not outstanding, but he just loves reading and is curious about natural phenomena, such as colors, the movements of the four seasons, especially geometry, Heliocentrism of Copernicus and so on. He also takes reading notes in different categories and likes to make ingenious gadgets, tricks, inventions and experiments.
At that time, English society was permeated with new Christian ideas, and two relatives of Newton's family were priests, which may affect Newton's religious life in his later years. From these ordinary environments and activities, we can't see that Newton is a gifted child.
Later, forced by life, his mother asked Newton to drop out of school and farm at home to support his family. But Newton buried a book whenever he had the chance, so that he often forgot to work. Every time, when his mother told him to go to the market with his servant and get familiar with the trade business, he begged the servant to go shopping alone, while he hid behind a tree and read a book. Once, Newton's uncle became suspicious and followed Newton to the listed town. He found his nephew sprawled on the grass, absorbed in a math problem. Newton's studious spirit touched his uncle, so he persuaded his mother to let Newton go back to school and encouraged him to go to college. Newton went back to school and drew nutrition from books. It is said that once, he went to the countryside to play and then rested under an apple tree. Suddenly, an apple fell from the tree and hit Newton on the head. He wondered why the apple fell from the top instead of rising from the bottom. He returned to China to study this problem. Later, he discovered that the earth has gravity and can attract objects. Then, Newton's physical gravity appeared. This has also become a new beginning of physics.
Gravity on the earth's surface
In fact, in the coastal areas of India, you will be lighter, while in the southern Pacific, you will be heavier.
The reason for this difference is under study. The Grace Gemini satellite launched by NASA in 2002 is now measuring the gravity field of the earth in detail, which may help scientists find out the reason for this gravity gap as soon as possible. The attraction between all objects with mass. The force exerted by the earth on other objects is called gravity. The gravity of other objects points to the center of the earth. This is caused by the rotation of the earth. The rotation of the earth will produce a force called geostrophic deflection. In the northern hemisphere, it makes objects move to the right; In the southern hemisphere, it makes objects move to the left. So the northern hemisphere is counterclockwise and the southern hemisphere is clockwise. According to Newton's law of universal gravitation, there is gravitation between any two substances with mass.