The first semester of an undergraduate physics course invariably spends a lot of time on two big ideas: The momentum principle and the work energy principle. Both deal with forces acting on an object, ...

A new quantum measurement technique reshapes uncertainty, allowing precision once thought impossible under Heisenberg’s principle.

Angular momentum is a fundamental quantity in physics that describes the rotational motion of objects. In quantum physics, it encompasses both the intrinsic spin of particles and their orbital motion ...

Physicists have measured both the momentum and position of a particle without breaking Heisenberg’s iconic uncertainty principle. In quantum mechanics, particles don’t have fixed properties the way ...