The headline is somewhat of a trick question: of course the effect did exist before the railroads. However, it wasn’t yet defined by the physics of the day, nor was it even noticed before the ...

While quantum physics continues to raise new questions(Opens in a new window) concerning Einstein's theory of general relativity(Opens in a new window), a recent ...

THERE are some close Earth satellites carrying radio frequency transmitters. By means of the Doppler effect, the radiation from the transmitters received at ground stations is used to infer the ...

I am so intimidated right now...I think I understand less about relativity now than before I asked the question. I think - if I understand things as written - that time can be observed to slow for an ...

To make the admittedly weird concept of relativity easier to understand, a team of developers has created a video game that slows down the speed of light. Relativity is the theory that space and time ...

While quantum physics continues to raise new questions(Opens in a new window) concerning Einstein's theory of general relativity(Opens in a new window), a recent ...