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 ...

Even if you don’t know much physics, you probably know one of its core tenets: an object at rest stays at rest, and an object in motion stays in motion. In fact, in a vacuum where there’s literally ...

Light is the fastest-moving thing in the universe. So what would happen if the speed of light were much, much slower? In a vacuum, the speed of light is about 186,000 miles per second (300,000 ...

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 ...

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 ...

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 ...

PROF. DINGLE makes Prof. Haldane's contribution to kinematical relativity the occasion for what he thinks is an attack on its foundations. He is very simply answered: the red-shifts in the spectra of ...