Newton was a

famous inventor. He’s “first major public scientific achievement was designing

and constructing a reflecting telescope in 1668”. (“Isaac

Newton Biography”) And story that many people know is that “Newton discovered the

law of universal gravitation by seeing an apple falling from the tree” .(“Isaac Newton’s Life”) Not

only discovering the power to drop apples is his great thing but also

generalized that power and thought that the falling of an apple and the

operation of a planet were the same law. We think Newton is a physicist.

However, he is also a mathematician who discovered the differential integral

method.

“Newton was

born on January 4, 1643, but in England they used the Julian Calender at that

time and his birthday was on Christmas Day 1642”.(“Isaac

Newton and his Contributions to Mathematics”) In

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1661 he

entered the Trinity College where his uncle William Ascue was studying. There

he met a master named Isaac Barrow who is also a mathematician. Newton gained

talent on meeting encounter with him.

Newton

thought that the same force is moving the moon and the apple. He saw an apple

falling in the orchard between 1665 or 1666. Compared to the force pulling the

object to the ground, he calculated the force needed to hold the moon on its

orbit. He also calculated the relationship between the centripetal force needed

to the hold the stone in the sling and the length of the pendulum and its swing

time.

So in

discovering the law of universal gravitation, Newton invented the differential

integration method.

I am

currently receiving a lecture on differential integration, but I find it

unbelievable to discover this law.

Today it is

applied to a wide range of fields such as rocket orbit calculation and economic

analysis, and it is indispensable learning.

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Newton who

discovered the differential integral method was a genius.

and very

fortunate.