**Einstein’s theory of relativity** was beyond any doubt lovely, different from any other theory ever imagined by mankind. Newton described gravity merely as a force acting over a

## Relative Nature of Motion

Now we know that motion is a relative term.So absolute motion has no meaning, right?

So aren’t Galileo’s view that earth moves around sun and the church’s old belief that sun moves around

## Mirror Mirror Relativity

Can you see your image when you are travelling at the speed of light?

Visitors and students are requested to respond and answer via comments.

Einstein’s Theory of relativity says:”The Laws of Physics

## A question from Relativity

Can someone tell me how to derive M = M_0/√(1 – v^2/c^2) Emmanuel Gonzalez posted this. The formula for relativistic mass (i.e. the mass of a body when it is moving with speeds comparable to the velovity of light in vacuum is given by)

## More on Cosmological constant

A constant introduced by Einstein (1917) into the equations of general relativity to allow a steady state cosmological solution to the Einstein field equations. The constant was introduced

## Let's try to Understand the Theory of Relativity

Einstein’s theory of special relativity includes electricity and magnetism in a simple, logical extension of the relativity of Galileo and Newton. Its conclusions, including time dilation, length contraction, and E=mc^{2} have changed profoundly our ideas of time and space, matter and energy.Find more at http://www.phys.unsw.edu.au/einsteinlight/ The link will open in a new window. |

## A discussion on Relativity. Join Now

**hot discussions**at http://groups.google.com/group/plustwophysics/browse_thread/thread/fed1b0240ca5775d#

**on Relativity**. You can also start discussions or take part in already running discussions after joining the group http://groups.google.com/group/plustwophysics/ A lot of downloads and online reading links are provided for reference.