# Essay On Sir Isaac Newton

## Essay on The Contributions of Isaac Newton

973 Words4 Pages

Sir Isaac Newton is considered by many people to be the greatest scientist that ever lived. He made key fundamental contributions to mathematics and physics. His revolutionary advances in math, optics, physics, and astronomy are bases for the principles we use today. A little known fact about Newton's legacy is that if you look in an encyclopedia of science, it will reveal at least 2 to 3 times more references to Newton than any other individual scientist. Newton was born on Christmas Day, 1642 in Woolsthorpe, England. He was born the same day that Galileo Galilei died. His step- father died a couple months before he was born, and 2 years later his mother marries a well-to-do minister by the name of Barnabas*…show more content…*

When he first expressed his findings nobody believed him, he was criticized because before Newton's findings, colour was thought to be modified forms of white light. Newton expressed his finding in Opticks, written in 1692, but waited to publicize it until all the critics were dead. The book was imperfect, but still served as a model of theory with quantitative experimentation.

Mathematics:

Newton made considerable contributions to all areas of math, but his more famous contributions were in analytical geometry and calculus. He discovered differentiation (lines tangent to curves) and integration (area underneath a curve) and found that they are inverse of each other. He also found ways to resolve problems of curvature by a method of fluxions. He used the term fluxion because he thought of a quantity flowing from one value to another. Newton's work on math wasn't publicized until 1704. Newton wasn't alone in finding these "discoveries," Leibniz claimed he independently came up with the first ideas about differential calculus. This sprung up a huge fight between both men which didn't end even upon Leibniz's death. Today they are jointly ascribed in the honor of first inventing calculus.

Universal Law of Gravitation:

According to the well-known story of Newton seeing an apple fall from a tree, Newton

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## Biography of Sir Isaac Newton Essay

1142 Words5 Pages

Isaac Newton is considered by many to be one of the most influential people in human history. Born on January 4th 1643 (New Style calendar, December 25th 1642 on the Old Style) at Woolsthorpe Manor in Woolsthorpe-by-Colsterworth, Isaac Newton was involved in the fields of physics, math, astronomy, among other fields. Best known in the Physics community for his three laws of motion as well as his description of universal gravitation, he was also responsible for much during his life. Born three months after the death of his father, a farmer also named Isaac Newton, he was born prematurely. He was a small child and not expected to survive.

When Newton was three, his mother remarried and moved in with her new husband, Reverend Barnabus*…show more content…*

From 1670 to 1672, Newton lectured on optics. During this period he investigated the refraction of light. It was during this research that he discovered that colours are the result of objects interacting with already coloured light, as opposed to the object creating the light itself. This became known as Newton’s Theory of Colour. It is through this work that he was able to produce the first reflecting telescope, completed in late 1668.

In 1679, Newton returned to his work on celestial mechanics. This renewed interest was triggered by a brief exchange of letters in 1679-1680 with Robert Hooke (of Hooke’s Law). The appearance of a comet in the winter of 1680-1681 further encouraged Newton’s re-emerging interest in astronomy. Newton then determined that the elliptical form of planetary orbits would result from a centripetal force inversely proportional to the square of the radius vector, later known as Newton’s Law of Universal Gravitation.

On July 5th 1687, Newton first published Philosophiæ Naturalis Principia Mathematica (Latin for "Mathematical Principles of Natural Philosophy") a three book compilation with the encouragement and financial help of Edmond Halley. It was in this work that Newton stated the laws that he is best known for, and that were responsible for a significant leap forward in science, the three laws on motion, universal gravitation, and gravitas (weight, the effect later known as gravity) among many other things, such as the speed

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