Umbra and penumbra with an extensive light source

Article no. P1100300 | Type: Experiments

grades 7-10
10 Minutes
10 Minutes
easy
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Also part of:

DEMO advanced Physics Set Optics, incl. halogen lamp with magnetic base

Article no. 15550-88 | Type: Set

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Principle

When using two extensive light sources, umbra and penumbra are formed behind opaque bodies.

 

Benefits

  • minimal preparation time
  • light-intense halogen lamp
  • easy teaching by using the demo board for demonstration
  • ideal complement to analog student experiments by directly comparable devices

 

Tasks

Observe umbra and penumbra with increasing distance of the object to the light source.

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