The double slit experiment reveals that observing light changes its behavior, making it act as both a wave and a particle.

A single atom as a movable slit: Researchers realize Einstein's thought experiment in original form, observing ...

For more than a century, the double-slit experiment has been the sharpest test of what reality is made of, and of whether ...

Quantum physics didn’t set out to explain the mind. It set out to explain matter. And yet, the deeper scientists went into ...

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

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

New quantum experiments may settle the century-old Einstein vs Bohr debate, revealing key insights into quantum behaviour.

Two newly published experiments have resolved one of quantum physics’ most iconic disputes.

Quantum mechanics is weird. When you think you have reached the bottom of its weirdness, you always discover a new ...

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

A physics experiment published this year that claimed to measure a single photon in two places at once – and, in the process, discredit the idea of a multiverse – drew pushback from many sceptical ...

A core tenet of quantum theory was imperilled this year when a team of researchers put forward a radical new interpretation of an experiment about the nature of light. At the centre of the new work ...