Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

Now, two unrelated-but-similar experiments confirm that, in a double-slit experiment, detection of a photon’s path (its ...

Light has always been the stage on which quantum mechanics performs its strangest tricks, and the double-slit experiment is ...

Quantum theory and Einstein's theory of general relativity are two of the greatest successes in modern physics. Each works ...

The pioneer of quantum computing talks about how Albert Einstein would have reacted to his experiments, the hype around the ...

Scientists in China have performed an experiment first proposed by Albert Einstein almost a century ago when he sought to ...

Physicists in China have brought one of Einstein’s thought experiments into reality—but not quite with the outcome he hoped ...

A unified Theory Of Everything is the holy grail of physics, but gravity refuses to play ball. A newly proposed theory attempts to unify Einstein’s theory of gravity with quantum mechanics – and ...

Hardy's paradox, created in 1992, hinted at a scenario haunting the edges of quantum physics. It presented a thought ...

Scientists have determined a way to measure gravity on microscopic levels, perhaps bringing them closer to forming a theory of "quantum gravity" and to solving some major cosmic mysteries. Quantum ...

This episode of the Physics World Weekly podcast features Alex May, whose research explores the intersection of quantum ...

The fifth state of matter—the ultracold Bose-Einstein condensate (BEC)—has been an invaluable tool in unlocking the secrets ...