In his discussion of accelerated motion on page 60 of "The Meaning of Relativity," Albert Einstein made an approximation that allowed him to develop the theory of relativity further. Einstein ...

Create a Physics World account to get access to all available digital issues of the monthly magazine. Your Physics World account is sep ...

A new discovery suggests gravitational fields can enable matter to become quantum entangled — and that's even if the concept ...

In a new Physical Review Letters study, researchers propose an experimental approach that could finally determine whether ...

Question: I read a brief history of time by hawking and I am interested to know why Einstein’s theory of relativity and quantum physics can’t come together to come up with a theory of everything?” ...

Are black holes as simple as they appear, or is there more to their story? Theories that attempt to resolve the so-called black hole information paradox predict that black holes are much more ...