meaning in case of twin paradox as the twin on Earth sees that the other is aging slower
so my ? is that is the otr twin actually aging slower or is he just appearing to age slower to the twin on the Earth ??
similarly when we say that for an observer outside a fast train , the length of...
Ok let me reframe my question
When we say that there is time dilation or length contraction and also in the twin paradox wherein the twin that travels near the speed of light will age slower
so my question is that do all these things just APPEAR to an external observer or do these things...
Now according to special relativity when in the case of two people traveling at different speeds have their own clocks running differently depending on their velocity
I have understood the theoritical part of this that as c=d/t and as d= space and t= time and c= velocity of light . thus...