### Theory of Relativity in Brief

Relativity was developed by a famous German physicist, Albert Einstein. Some contributions of Hermann Minkowski, Hendrik Lorentz and Max Planck is also there.
Theory of Relativity comes in two different ‘versions’ – ‘Special Theory of Relativity’ and ‘General Theory of Relativity’ or simply special relativity or general relativity.

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### Gravitational Waves

Space-time is a 4-dimensional structure, but we can’t actually even visualize a 4-dimensional space-time because we can’t see the dimension of time as our brain creates a 3-dimensional model of everything we see. So, we represent it with two dimensions, like a fabric.

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### Curved Space-time

The Principle of equivalence is the foundation of general relativity and it states that –The effects in a gravitational field are same as the effects in accelerated frames of reference

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### The Equivalence Principle

Sir Isaac Newton was best known for his work on GRAVITY.According to Newton’s theory of gravity, every object in the universe attracts every other object in the universe.

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### Classical Physics in Brief

Our current ideas of motion and rest were developed by Galileo Galilei and Sir Isaac Newton in the seventeenth and early eighteenth century.These ideas developed by Galileo and Newton are the parts of Classical Physics or Newtonian Physics in which Newton had a very huge contribution including his laws of motion and his universal law of gravitation which will be discussed in this article.

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### Light Cones

Last Updated on January 30, 2019 A better version of this article is — THEORY OF RELATIVITY IN BRIEF which is also a featured article on our blog. So, we recommend you to read that article instead of this, and, also that article describes RELATIVITY completely. Click HERE to read THEORY OF RELATIVITY IN BRIEF →

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### Squeezed Space and Stretched Time

Last Updated on January 30, 2019 A better version of this article is — THEORY OF RELATIVITY IN BRIEF which is also a featured article on our blog. So, we recommend you to read that article instead of this, and, also that article describes RELATIVITY completely. Click HERE to read THEORY OF RELATIVITY IN BRIEF →

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### The Basic Idea of Relativity

Last Updated on January 30, 2019 A better version of this article is — THEORY OF RELATIVITY IN BRIEF which is also a featured article on our blog. So, we recommend you to read that article instead of this, and, also that article describes RELATIVITY completely. Click HERE to read THEORY OF RELATIVITY IN BRIEF →

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### Creation of Universe in Brief

The theory which explains the creation of universe and which is an accepted theory of the creation of universe is the Big Bang Theory.
According to this theory, our universe may have come from a singularity. Singularity may be defined as a point in space-time with infinite density and it’s is infinitely small.