Recent content by argha

does the book have any thing to do with tachyons?

yeah am familiar with the phase velocity bit but this guy claimed that ,the speed of light not being constant ,then one had to cast doubts on Einstein's theory of relativity. does different speeds of light in different times of our history have any effect on the theory of relativity?does the...

hey guys i just saw a weirdo on TV claiming that the speed of light is not constant...since that is a direct attack on Einstein's postulate of relativity is there any truth in that statement?