teaching his three laws of motion from 1687. He has published the most revered book in
science known as Philosophiae Naturalis Principia Mathematica (Mathematical
Principles of Natural Philosophy) which is more commonly known as Principia. He
helped explain elliptical planetary orbits and nearly every motion in the universe
including how all of the planets in our solar system revolve around the sun. Isaac
Newton explained almost every motion in the universe, made numerous discoveries in
optics, and discovered what shape stars’ and planets’ orbits really are.
Newton’s laws were introduced when he published Principia after 18 months of
hard and nonstop
work. His first law is “A stationary body will stay stationary unless an
external force is applied to it.” His second law is “Force is equal to mass times
acceleration, and a change in motion is proportional to the force applied.” His third law
is “For every action, there is an equal and opposite reaction.” These three laws explain
nearly every motion or action in the universe including our solar system orbiting the sun.
After a six year hiatus from public life, he introduced a theory that stars’ and
planets’ orbits actually formed the shape of an ellipse. When he introduced this theory
to his associates, they thought he might be onto something. A man named Robert
Hooke who started as Newton’s rival suggested that inverse squares might explain the
orbit of the moon and the sun. Finally he revealed his findings to the society and that he
had come to this conclusion eighteen months prior during the plague. When he could
not find his notes, another scientist demanded that he try to prove the theory
mathematically so they could publish him as the creator of the theory.
Newton has also made many discoveries in the topic of optics, one thing Robert
Hooke had also studied heavily on. As a professor, he was required to give an annual
lecture and decided to present his research on optics as his initial topic. While studying,
he would use one of his own inventions, a refracting telescope that he created in 1668.
The telescope helped prove his theories of light and color and was also his first major
scientific achievement. Robert Hooke was always questioning Newton’s discoveries
especially in optics