Once tied to a metal cylinder in France, the kilogram has now been redefined using the fundamental laws of physics.

Virtual particles may not be real, but they help physicists track how forces move, and allow for incredibly precise ...

Can we reveal objects that are hidden in environments completely opaque to the human eye? With conventional imaging ...

Differential equations are fundamental tools in physics: they are used to describe phenomena ranging from fluid dynamics to general relativity. But when these equations become stiff (i.e. they involve ...

"With this, we can detect very tiny changes in both position and momentum at once, beyond the limit of any classical sensor," the authors explained.