Relativity/Experts

Recent Answers

2009-11-14 Same value for all observers:

Dear Thiha, an experiment you probably already know about is actually the best experiment to answer your question. It is the famous Michelson-Morley experiment. Michelson and Morley were comparing

2009-11-12 Attraction between objects:

James, I see that you are interested in gravity. Newton said, when asked WHY objects attract each other, "Non fingo hypotheses," which means "I don't make hypotheses." Einstein also did not offer

2009-11-09 black holes:

Lenny, according to Einstein's General Theory of Relativity, there is a singularity at the center of a non-rotating black hole. This means that the density of matter at the center is infinite. The term

2009-11-05 Photon mass:

Tristan, light does not have any rest mass, but it does have energy and momentum. Light is electromagnetic energy and it is emitted in quantums (or "quanta"). Each quantum of light of given frequency

2009-10-27 time dilation,SR:

Sorry, I mis-read your problem statement. You are correct about the application of the velocity addition formula. It gives you the speed of B with respect to the earth. Your first answer is the correct