Physicists have proven a 100-year-old prediction of relativity by showing that Einstein's equivalence principle holds at quantum scales.

Fraser interviews quantum expert Sean Carroll. Credit: Universe Today To describe that deviation, physicists use a term known as the Eötvös parameter. It explains how closely gravitational mass and ...

Jonathan Oppenheim says scientists may be looking for answers to the biggest mystery in physics in the wrong place. According ...

A million-kilometer effective light path could reveal tiny frequency shifts, but the experiment would not alone prove ...

Everything around us, from atoms and molecules to planets and galaxies, is governed by two extraordinarily successful theories of physics: quantum mechanics and gravity. Quantum mechanics explains the ...

Quantum theory and general relativity have long described the universe with incompatible languages, one speaking in probabilities and the other in smooth curves of spacetime. A new line of work argues ...

All the fundamental forces are thought to be carried by a particle, but a new mathematical model suggests gravity may be a striking exception. Building on a decades-old idea, researchers have revealed ...

"I had really dotted all the i's and crossed all the t's of the experiment." ...

Measuring gravitational analogues of quantum phenomena could lead to high-precision measurement of gravitational forces, according to a theoretical proposal. Micromuffins. The 1-µm-wide ...