What Is Time Dilation?
Comments (4)
The special theory of relativity depends on the assumption that the speed of light is constant for all observers irrespective of their relative motion. If you hold the speed of light constant, time and space become variants when they should be invariant. That means that length contraction and time dilation are illusions.
OK here is one of the bits of this I can never get. The statement goes...."as an object approaches the speed of light its mass becomes infinite". True or False? If 'True' then I have two questions: (i) as energy has mass then a light photon has mass (resulting from: e=mc2 & wave-particle duality; even if unimaginably small) and therefore how on earth can light even travel at the speed of light without becoming infinite in mass? (ii) if we can accelerate protons to near speed of light at CERN then why don't these particles also become super-massive? Or maybe they do. HELP!!!?? :-O
Great video, as always! Is the speed of light constant even if the frame of reference is accelerating?
The speed of light is still constant, but your instruments may say otherwise depending on exactly how you measure it. All bets are kinda off in a non-inertial reference frame.