Teltron Tube
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A teltron tube is used to fire electrons. It is a type of electron deflection tube which bends the path of the electrons. When fired, they usually emit a fine bluish line which can be seen more clearly in the dark.
They are usually used to teach electromagnetic effects because they show how an electron beam is affected by electric fields and by magnetic fields.
[edit] Motions in fields
Motion of particles in an electric field are parabolic, whereas they are circular in magnetic fields.
[edit] The Apparatus
The 'teltron' apparatus consists of a Teltron type electron deflection tube, a Teltron stand, EHT power supply (0 - 5000 V DC, variable).