Teltron Tube

A teltron tube (named for Teltron Inc. which originally manufactured it before being bought by [http://www.3bscientific.co.uk/ 3B Scientific Ltd.] ) is a type of cathode ray tube used to demonstrate the properties of electrons. It usually contains two electron guns, which can project two thin electron beams at right angles. The beams can be bent by applying voltages to various electrodes in the tube. The electron beams are visible as fine bluish lines. This is accomplished by filling the tube with low pressure helium gas. A few of the electrons in the beam collide with the helium atoms, causing them to fluoresce and emit light.

They are usually used to teach electromagnetic effects because they show how an electron beam is affected by electric fields and by magnetic fields.

Motions in fields

Motion of particles in an electric field are parabolic, whereas they are circular in magnetic fields.

The Apparatus

The 'teltron' apparatus consists of a Teltron type electron deflection tube, a Teltron stand, EHT power supply (0 - 5000 V DC, variable).

External links

* [http://lpc1.clpccd.cc.ca.us/lpc/physics/pdf/phys2/eoverm.pdf http://lpc1.clpccd.cc.ca.us/lpc/physics/pdf/phys2/eoverm.pdf]
* [http://www.fbise.edu.pk/curr/hsscsyll/Physics.doc http://www.fbise.edu.pk/curr/hsscsyll/Physics.doc]
* [http://www.practicalphysics.org/go/Guidance_136.html?topic_id=$parameters.topic_id&collection_id=%24parameters.collection_id Practical Physics - Types of Electron Tube]