Cathode rays in magneticfield.
A charged particle is fired into a region with controllable a magnetic field. The
magnetic field points into or out of the view depending on the sign of Bz.
Enter the Bz value
and press the play button to change the field. Observe the force vector on the
particle. The value of Bz is constrained to -0.5 < Bz <
The cathode ray in a magnetic field IBE is used with permission of Dr. Juergen Kirstein
(TU Berlin) and the Deutsches Museum (Munich).