Name: Magnetic Forces and the DC Electric Motor (revised) @mrg3
Uploaded: 2022-10-24T01:29:31-0400
Duration: 8 min 17 s
Description: The forces on the wire segments of the current loop in an electric motor depends upon the geometry of the loop (relative to the magnetic field) as well as the direction of the current. This animation illustrates those forces and the role of the commutator in switching the current direction so that torque on the loop continues to keep the loop spinning.

Frame Dragging and the Lense-Thirring Effect @mrg3

Uploaded June 2008 | Updated September 2026, 3 weeks ago

This animation is an artist's conception of the Lense-Thirring Effect, which can create a precession of an orbiting object around a spinning gravitational source.

Frame Dragging and the Lense-Thirring Effect

Motion of Electric Charges in a Uniform Magnetic Field

Magnetic Forces and the DC Electric Motor

Magnetic Forces and the DC Electric Motor (revised)