Almost a hundred years ago, physicists theorized out what free fall should do to a quantum wave. If the solution they came up with is wrong, quantum mechanics and Einstein’s theory of gravity flatly ...

One of the discoveries that fundamentally distinguished the emerging field of quantum physics from classical physics was the observation that matter behaves differently at the smallest scales. A key ...

IntroductionIn contexts like electrons, quantum spin or pairs of quantum entanglement are often expressed as plus or minus ...

Add Yahoo as a preferred source to see more of our stories on Google. For the first time, physicists have measured the tiny quantum shift an object acquires by falling through Earth's gravity — an ...

If you throw a ball at a wall, it hits only one spot. If electrons were also tiny balls, wouldn't they just hit a smaller ...

Physicists have directly observed a long-predicted quantum effect of gravity, putting one of Einstein’s foundational ideas to a striking new test. Using ultracold atoms, researchers split an atom’s ...

Quantum mechanics has journeyed from a strange and controversial idea to the foundation of some of humanity’s most advanced technologies. Now researchers are pushing its boundaries even further, with ...

Scientists have spotted the first hints that Einstein's formulation of gravity operates in the quantum realm.

Chapters: 0:00 Why do we need Quantum Mechanics? 2:23 What's "weird" about QM? 4:07 What is the Measurement Problem? 6:29 ...

Quantum mechanics is both the most powerful theory physicists have ever devised and the most baffling. On the one hand, countless experiments have confirmed its predictions; the theory undergirds ...