Optics

6D30.10: Newtons Rings


Description: This shows interference patterns from a thin air gap between glass.
The knobs on the side can be used to vary the air separation at that location.

Equipment: Setup Procedure:
  1. If the professors wants to use the slide projector method, attach the Newtosn Rings to the portable stand.
  2. Line it up so the slide projector is aimed at the newtons rings, and the reflected light hits the screen.
Demonstration Procedure:
  1. Place the newtons rings on the Overhead projector.
  2. Turn on the Overhead projector.
  3. You may make slight adjustments to the three screws to change the spacing between glass plates. Note the change in the ring pattern.
  4. This can also be done with a slide projector, with the light reflected from the newtons rings displayed on a screen (harder to setup).
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