In an introductory physics course, there are three big ideas. There is the work-energy principle, the momentum principle and then the angular momentum principle. I'll skip the work-energy ...

What Is Angular Momentum? Angular momentum is a measure of rotational motion. We can calculate it as the vector product of an object's position and its linear motion.

Key concepts Physics Angular momentum Tension Introduction You might have seen figure skaters spinning around quickly and then tucking their arms to spin faster—or opening them to spin more ...

Where does the angular momentum go? To find the lost angular momentum, Peter Baum and members of his team at Konstanz began by magnetizing nickel crystals in a specific direction, then demagnetizing ...

Angular momentum is basically momentum with a rotational motion — an object’s angular velocity (how fast it’s spinning) multiplied by its moment of inertia.

Photons can have half-integer values of angular momentum when they are confined to fewer than three dimensions. That is the conclusion of physicists in Ireland, who have revived an experiment first ...

A research team succeeds in solving a decade-old physical puzzle: the question of the fate of angular momentum during the ultrafast demagnetization of nickel crystals by laser light.

From a basic physics viewpoint, our results help to resolve key questions such as the conservation of angular momentum in highly nonlinear light–matter interactions, and the disentanglement and ...

Why do the planets orbit in almost the same plane and direction? It’s not a coincidence—it’s physics at work. In this video, we rewind billions of years to see how a collapsing cloud of gas and dust, ...

Shashanka R. Gurumath, K. M. Hiremath, V. Ramasubramanian, Angular Momentum of Stars and their Planets, Publications of the Astronomical Society of the Pacific, Vol ...

For a first demonstration of attosecond angular streaking, we have measured the ion momentum space distribution of helium ionized with intense CEP-controlled, near-circularly polarized 5.5 fs ...