Friday, 19 July 2013

Introduction to Relativity

Theory of Relativity is the one of the most popular theory of modern physics. In fact modern physics is partially based on Theory of Relativity. Relativity states that Time is not absolute, Gravity distorts Space Time and speed of light is constant in all frames of reference.

Although Einstein received the Nobel Prize in 1921 for his work on photoelectric effect, he is well known for  his Theory of Relativity. Einstein gave his Special Theory of Relativity in the year 1905 and General Theory of Relativity in 1916. Both these theories were verified by several experiments.

We would start with the discussion of Pre-Relativity, i.e major physical facts that we must know before understanding Relativity. You can skip the Pre-Relativity section if you have enough knowledge on the subject. Then we would discuss the Special Theory of Relativity which would help you understand, why Time is relative and how mass is energy. Afterwards we would be discussing the General Theory of Relativity that explains how Gravity distorts Space Time and how modern physics explains gravity. Finally we would end with an overview and criticism of Relativity.

Before going further and reading the chapters, it is necessary that you learn the basics of Physics. It is impossible for anyone to make you understand relativity without having some basic knowledge of physics. It would be helpful to go through science books based on Mechanics, Atomic structure and Mathematics. Even your secondary-school books would serve this purpose.

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