Columbia University Physics Lecture Demonstrations


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5M20.2 Electron Beam in a Discharge Tube

[Setup Time: 5 Min.] [Current Condition: no longer used- this setup produces a large number of x-rays]

Info

A horizontal discharge tube has a wall or screen running down its middle. At one end are two slits, and when a tesla coil is applied to that end, the electrons which go through the slits light up a path on the screen. Use a strong bar magnet to bend the path of the electrons.

Note: Do not use this in a lecture. X-ray radiation is extremely hot.

Parts List

Glass Tube with White Screen in G2C

Tesla Coil in Tall Cabinet

Strong Cylindrical Magnet in L1B

Relevant Simulation

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Other Information

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Real-Life Examples

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More Advanced Reading

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