4D20.10-Crookes’ Radiometer

4d2010crookes_radiometer

Video: Watch this demo

Instructor’s video

Description: This demonstration shows a Crookes’ Radiometer.

Equipment:

  • Crookes’ Radiometer
  • Flashlight or sun light

Demonstration Procedure:

  1. Turn on the flashlight and aim it at the vanes.
  2. Note the direction that the vanes move.

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