Sir Isaac Newton
Sir Isaac Newton
Childhood
Sir Isaac Newton was born on Christmas day in 1642, Lincolnshire, England. Unfortunately, his father died three months before his birth, making his mother having a hard time raising Newton. So his mother decided to re-marry, but she married a husband that didn’t want Newton to live with them, so Newton lived with his grandmother.
Isaac’s teacher was stunned by how good he was in school, Isaac often read books, and studied very well. He was also very intelligent, and often could even get over people that bullied him, even though he was a weak boy that couldn’t play some games that were rough. And his teacher considered him to be his best student that he had ever taught.
Unfortunately Isaac’s childhood was lonely, he didn’t talk a lot to his grandmother, and often locked himself in his room making models just like the person who invented it. He was also very furious at his stepfather, and considered him to be the “beast”, because the stepfather didn’t let Isaac stay with his mother. This big event in his childhood made him secret, not believing most people, but still intelligent.
Inventions and college education
Isaac went to a college called Trinity College, located in Cambridge, England. But while he was learning, the plague (a disease that had no medicine to cure it) started, and soon the college was to close its doors until the plague was over. He then was working very hard in the last year at college, reading books. Meanwhile he discovered that if light were to go through a prism, the light would bend into a 90-degree angle and come out becoming a rainbow. He then placed another prism in front of the rainbow, and then one beam of white light came through the prism. Surprisingly, nobody had ever discovered this.
Isaac had also discovered a famous principle, which was “gravity”. How all items stay in place and the natural force that makes us stand on the ground. He ended up finding that the force pulls us down because of gravitational force.
Gravitational force also shows why planets stay in orbits, because of the sun’s force. But why wouldn’t they crash into the sun? Then Newton started to calculate, and remembered that if a bucket of water was tied to a rope and spun around fast, the water won’t fly out of the bucket, because of the force. Planets also orbit in circles, so the force should be why planets orbit the sun. And the farther the planet is, the less force the planet feels. For example, Earth will feel only one-ninth the force from the sun while Mercury only feels one-half of the force from the sun.
This discovery and Newton’s three laws were then published into a book called the “Principia”. And now we can see that many discoveries these days are following Isaac Newton’s laws.
Newton’s Three Laws of Motion
1.Every body continues in a state of rest or uniform motion in a strait line unless it is acted on by an external force.
2.When a force acts on a body, the rate of change of momentum of the body is proportional to the force and changes in the direction, which the force acts.
3.To every action there is an equal and opposite reaction.
Sir Isaac Newton passed away on March 20, 1727, at the age of eighty-four.
But his great discoveries never were forgotten. Now people are learning, and inventing things by using Newton’s laws and discoveries. Maybe many more items will be invented by using Newton’s laws too! The discoveries are really important to the society now.
Thursday, November 1, 2012