Electrons in a Magnetic Field
the purple light shows the path of electrons in the magnetic field in a gaseous medium
Charged particles in magnetic fields have a force that acts perpendicular to its motion, thus resulting in circular motion of the charge. This photo shows this in action. The purple lines show the trajectory of electrons within an applied magnetic field. The purple colour is generated by the excitation of gas within the bulb, giving rise to an ethereal, glowing hoop.
source: Quantum Mechanics/ fb
