Beam of electrons moving in a circle, due to the presence of a magnetic field. Purple light is emitted along the electron path, due to the electrons colliding with gas molecules in the bulb. (Photo: Marcin Bialek ) Oh, how I love you guys. In our recent post A Fiery Dance on the Sun , Neatoramanaut PlasmaGryphon kindly took the time to explain to us the physics behind solar flares. In the explanation , there was a link to Wikipedia article on Lorentz force , where I found this fascinating image of a circular beam of electrons in a Teltron tube . Neat, huh? ( Thanks PlasmaGryphon! )
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Circular Beam of Electrons