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isaac newton
Isaac newton.

Sir Isaac Newton became one of the most influential scientists in the world. Newton contributed greatly in the fields of mathematics, physics, chemistry, and astronomy.

Thanks to his scientific works, humans can understand the world around them. Among his famous works, you may know Newton from his theory of gravity.

Actually, Newton was not only famous for his theory of gravity. There are still many other theories that were successfully defined by this man, who born in December 25, 1642.

Modern Telescope.

Newton succeeded in creating a modern telescope. Before Newton, the standard telescope only gave magnification and left numbers of weaknesses.

Known as refracting telescopes, they use glass lenses that change the direction of color at different angles. This method causes chromatic aberrations or fuzzy, unfocused areas around objects seen through a telescope.

After fiddling with and testing the lenses themselves, Newton finally found a solution. He replaced the refraction lens with a set of mirrors, consist of a large concave part to capture the image of the inspected object and a smaller flat one as a reflector that will display images to the eye.

Newton’s new reflecting telescope is stronger than the previous version. And, because he uses a small mirror to reflect images to the eye, he can make a telescope that is far more practical.

The first model, which was made in 1668 and donated to the British Royal Society, has a length of only six inches. But, can enlarge the object 40 times.

Newton’s simple telescope design is still in use today, both by amateur astronomers and scientists from the US space agency NASA.

Developing Spectral Analysis.

Newton has helped these people on Earth understand and identify the seven colors of the rainbow. He began working on his study of light and color before even making a reflecting telescope.

Quoting biography on Monday (04/08/2019), before Newton, scientists adhered to the ancient theory of color, including Aristotle. Some scientists even believe the color of the rainbow is formed by raindrops that colors the sky.

Newton did not agree with the idea. He finally made a series of experiments which ended without proof.

In the end, Newton worked in his dark room and directed white light through a crystal prism on the wall which was separated into seven colors. Scientists already know a lot of these colors, but they believe in the prism itself which converts white light to that color.

But, when Newton refracts the same colors back into another prism, they form white light, proving white light (and sunlight) is actually a combination of all the colors of the rainbow.

Isaac Newton’s Law of Gravity and Calculus.

Principa was Isaac Newton’s first published work on planetary motion and gravity. According to popular legend, the young Isaac Newton was sitting under a tree on his family’s farm when an apple fell on his head, inspired his famous theory.

Newton suggested that if the gravitational force attracts an apple from a tree, it is also likely to pull other objects. Newton’s theory helped prove that everything, as small as an apple and as heavy as a planet, was subject to gravity.

Gravity helps keep the planet rotating around the Sun and creates tidal rivers. Newton’s law also states that larger bodies with heavier masses carry greater gravitational pull. That is why astronauts who walk on the Moon experience sense of weightlessness because of the moon’s weaker gravity gave lower gravitational pull.

To help explain his theory of gravity and motion, Newton helped create new and specialized mathematical forms. Originally known as flux, and now calculus. He mapped the changing state of nature and variables in ways that algebra and geometry cannot do.

source: inews.id.


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