The Contributions and Proposed Ideas of Isaac Newton

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The most famous physicist of all time is Sir Isaac Newton. Newton was a theologian, an astronomer, a mathematician, and, most significantly, he was a physicist. Newton was a major figure in the 17th century’s scientific discoveries. The incorporation of white light into the comprehension of colors, the laws of motion, and gravity were his contributions to the world of science. Newton is remembered alongside physics for tremendous achievements in the area of mathematics where he is credited with the invention of the “infinitesimal calculus.” Newton went on and wrote ground-breaking books as known today that lay history in contemporary science. One such publication is the “Mathematical Principles of Natural Philosophy, 1687.”

Newtons Theories

It is well documented that Isaac Newton discovered the “gravitational theory” when an apple accidentally fell on him from a tree in a garden(Perlov and Vilenkin 15). Newton further expounded this theory using what is defined as the “Three Laws of Motion.”

• Newton’s 1st law is associated with the force of inertia. According to the principle, Newton explains that a stationary object will remain in a fixed position when there is no outside force acting on it(Perlov and Vilenkin 18). However, an object that is in motion will continue to move at a constant velocity unless an external force is exerted upon it.

• Newtons 2nd law shows the relationship between an object, the force acting on it and the direction of momentum. According to this theory, Newton explains that a body will exhibit a change in momentum that is similar to the resultant force that is acting on it. Based on the principle involved, an increase in the force exerted will increase acceleration(Perlov and Vilenkin 21).

• Newton’s 3rd law shows the correlation between the force acting on an object in relation to another object(Perlov and Vilenkin 23). According to Newton, every force applied produces a resultant equal and opposite reaction.


Perlov, Delia, and Alex Vilenkin. “Newton’s Universe.” Cosmology for the Curious, Springer, 2017, pp. 13–30.

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