Incompatible moments A spinning charge (left) acts like a loop of current to produce a magnetic dipole moment (blue arrow). Distorting the electron's charge distribution (middle) produces an electric ...

When the results of an experiment don't match predictions made by the best theory of the day, something is off. Fifteen years ago, physicists at Brookhaven National Laboratory discovered something ...

Magnetic moment is an intrinsic property of a particle with spin, arising from interaction between the particle and a magnet or other object with a magnetic field. Like mass and electric charge, ...

Supercomputer simulations rule out a known quantum effect as the cause of the muon’s unexpectedly strong magnetic moment. Physics advances when observations don’t match theory, so it’s unfortunate ...

This lesson covers syllabus section 1.5.2 — describing and defining the moment of a force, applying the principle of moments to balanced beams (including more than one force on each side of the pivot) ...