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Lecture Demonstrations Laboratory


The Demonstrations Manual


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Electrostatics
Electric Fields And Potential
Capacitance
Current and Resistance
Electromotive Force And Current
DC Circuits
Magnetic Materials
Magnetism
Inductance
Induction
Complex Circuits
Semiconductors And Tubes
Transistor Amplifier
Discharge Tubes
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Discharge Tubes

Purpose:

To show the properties of Beta rays.

Procedure:

Connect the coil to the electrodes of the discharge tubes and switch the coil on. The voltage can be adjusted with the voltage pot and the polarity can be switched with the + and - switch. Different tubes show various phenomena:

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Equipment:

  • Vaccum Pump
  • Alligator Clips
  • Solid State Induction Coil
  • Discharge Tubes