gravity wave

Genius and Elite: The Relation Between Galileo and Einstein

To explore the perception of the universe, Galileo Galilei (1564-1642) played an important leading role. With his discoveries, the veil between human beings and the universe was removed. Humans got to have a closer look of the moon, the sun, and the star. In addition, he proved physical theories by different experiments, such as the acceleration of falling objects. While two hundred years later in 20th century, Albert Einstein's (1879-1955) revolution lead the exploration of the universe to a higher level: the change and relation of space and time. Science is a continuous chain of discovery. Their theories influence each other. With the efforts of these great scientists, we humans are allowed to have a deeper understanding of the universe.

If it were not for a telescope,people could not have a tool to observe the universe and realize many subtle things outside the Earth. In the autumn of 1608, two Dutchman, Hans Lippershey and Zacharias devised a telescope. After that, it was first used in astronomy in early December 1609, and the observer was Galileo. At first,the telescope could only magnify objects seven times.  After Galileo's continuous efforts, the telescope finally could magnify objects twenty times. He successfully improved the telescope. Galileo used the telescope to observe many things in the universe. First of all, he discovered that the moon had mountains and measured some of their heights. In addition, he  found four satellites around Jupiter and that Venus showed  phases just as the moon. It was really an amazing news at that time because people were unable to imagine that humans beings could explore the world besides the Earth.Galileo started the precedent and lots of scientists follow his steps. They found more surprising phenomenon of astronomy with the telescope. Thanks to these scientists,  people can have more understandings about our universe.

In 17th century, Galileo released Galilean of principle relativity. This principle states that the laws of motion are the same in all inertial frames. Galileo first described this principle in his Dialogue Concerning the Two Chief World Systems. He using the example of a ship traveling at constant velocity, without rocking, on a smooth sea; any observer doing experiments below the desk would not be able to tell whether the ship was moving or stationary. But this theory includes only classical mechanics. Through this principle, Einstein spreaded it to the whole classical physics, and become Theory of relativity. Theory of relativity is about spacetime and gravitation, and usually encompasses two theories: special relativity and general relativity. The term Theory of relativity was based on the principle of relativity. It also bring a revolutionary change to the physics. Other than that, theory of relativity includes electromagnetic waves, mechanics and gravitation. 

Einstein once said “I know the spirit of Galileo, is based on the authority to any dogma lively battle.” From this sentence which Einstein once said, we can guess that he is deeply influenced by Galileo. Not only his theories, but also the attitude. The Master of Science Galileo put strong impact on many people including Einstein. If there was no the improvement of telescope by Galileo, Einstein may not find the existence of gravity waves. Also, Galilean principle of relativity may be the important inspiration of Einstein’s theory of relativity. Due to the contribution by Galileo, Einstein or other scientists could do their research easily.

In conclusion, the knowledge of science is accumulation from generation to generation. Galileo improved the existed telescope, allowed humans to have sight of Milky Way. Other than that, Einstein expanded his theory of relativity based on Galilean of principle relativity, we can see that Galileo had a great influence on Einstein. Science is a series of inheritance of knowledge. Galileo affected Einstein’s theory. Einstein achievements such as black hole, the gravitational lens and Gravity Waves also motivated the contemporary scientists to explore more about universe.