Question

Do anybody know about einstein's relativity

Answer 1

Because it is a very complex subject to be answered with just a few phrases, I suggest that maybe you did read some articles, texts on the subject and if you have questions, share here.

*Special Relativity (or Restricted): http://en.wikipedia.org/wiki/Special_relativity
*General Relativity: http://en.wikipedia.org/wiki/General_relativity

I know a little, maybe we can exchange some information. ;)

Answer 2

if gravity is caused by warping of space time fabric........is there apparent force of gravity between two equal mass (since they warp space time fabric equally)?

Answer 3

Well yes. Newton's Law of Universal Gravitation says:

\[F_{g}=G\frac{M_{1}M_{2}}{r^2}\]where G is the gravitational constant:\[G = 6.7384 x 10^{11}N (m/kg)^2\]r is the distance between the objects
M1/M2 are the masses of both objects

Answer 4

i do have something about that, but i fear i might not be able to make a summary of it. but this doc can be helpful. Try it out and see.

Answer 5

Suroj, we actually don't know whether gravity is a force or a space-time curvature. Newton said that it was a force, but he was unaware of the cause of it. Einstein said that gravity is an acceleration due to curvature of space-time(he stated a cause of it). There's a lot of confusion on this. Some Modern Physicists attribute gravitation to a fundamental particle called graviton. The Nobel Prize on that is still unachieved!
Read up on the topic Einstein and Gravitation.

Answer 6

i think the theory says that when we consider two objects say A and B .. now let us suppose they are moving with certain velocities Va and Vb and in same direction.

then velocity of B relative to A is Vb - Va ..... however if the 2nd object B were to be light then this could not happen.. in other words light doesnot travel with a ""relative velocity"". for nay object no matter what its own velocity is ... light's speed is always 3x10^8m/s