Yes, I was already wondering why there was no return after I send the laser beam to the centre of the Earth on to the mirror positioned at the other side.
After reading Einstein’s biography in respect to GR there was talking about rotating objects, gyroscopes etc., which was confusing. And of...
Einstein, for his GR theory he made a last important effort to make it valid also for rotating objects. So consider the following thought experiment.
There is an observer A standing at the North Pole and another observer B sitting on a platform, turning clockwise once every 24 hours, both with...
So no mass can reach the speed of light and your Lorenz factor will never produce an infinitive number.
An example: when an observer A brings some mass M at 99% of c it's mass seems to be 7 times larger. (factor 0.7*√(c/c-v).
For another oserver B traveling along with M the mass does not...
Indeed initial mass is important here. When an object gaines speed we might say it gaines mass, but only because mass is calculated as force/accelleration. Also the extra mass is only measured in the direction of the moving object. Happily at the LHC the protons become 700 times heavier (at...