Evolution of Physics
Evolution of Physics has originated from a word in Greek. It is Archimedes who first analyzed and presented the physical laws. His careful observations like buoyancy and forces were the first ever recorded in human history. So in a way he was the first intellectual to study the natural laws in a comprehensive way. Archimedes was a genius to recognize such things and his meticulous observations were incredible known till date. He even helped built some mechanical devices to help his empire army to ward off the ships in the battle, like a concave lens to focus entire sunrays to the ships as focal point to burn off the ships. It was his ideas that lay the foundation for the future discoveries of the physical natural laws. As a famous saying goes a minute spark can burn the entire forest in the same way his ideas were remarkable that set the light for upcoming scientists to discover what lies in the dark of unknown knowledge.
Astronomy had always been used by humans to know the patterns or cycles of seasons. The sailors used the positions of stars for navigation while farmers want to know the season. The science developed up to a stage where astronomical observations were in crude stage or used for day-to-day life or for mystical reasons. The first detailed records for the astronomy collected by Tyco Brahe were-passed on to Johannes, the man who invented the first heavenly laws. It was these laws that would be later used by newton to discover the gravitational laws of motion.
Ptolemy was the first person to put forward the structure of the universe with the major idea that earth is the center of the universe and star fixed across in the black area of the universe. This was in due compliance with the sayings of the Catholic Church. It was not wrong on the part of the church to accept the model as the idea agreed with the bible. But major upheaval happened when the center of the universe shifted to sun from the earth. This heliocentric idea of Copernicus set turbulence in the thinking of many and the church. The idea was further carried on by Galileo whose support led him to trial before the church which he supported until his last breath. He is-said to have uttered the words “and it still moves”.
Continuing the legacy of Aristotle and Archimedes Galileo continued to study the laws of motion. It was his work on these laws that throw some light on the nature of force and velocity. He verified and formulated laws through experiments. The laws of motion were further studied by newton and he crafted laws of motion out of his understanding and the predecessor’s’ work. Because newton was the first person on earth to have formally articulated and presented the ideas in a book called Principia, he is considered-as the discoverer of these laws of motion. These laws would form the bedrock of mechanics.
Now continuing with the astronomical progress the discovery of gravitation was further refined into general theory of relativity by Einstein. It gave altogether a different picture of the universe explaining it in terms of space-time warp. The Hubble’s discovery lead to the conclusion that universe is expanding. This discovery would give rise to the discovery of the Big Bang theory, a theory that propounds that everything originated from a cosmic fireball.
Well discussion till now showed the-evolution of major areas of physics that is the Astronomy and the Mechanics. What about other major areas of electricity, magnetism and quantum mechanics, the physics of the very small? A famous experiment done by Faraday demonstrated that when a magnet goes through a to and fro movement inside a magnet a current is-induced in the coil, is the phenomenon called electromagnetic induction.