Basic Idea:

• Observe interference fringes; calculate time delays.

What:	How Many:	Where:
Low-tech interferometer	1	non-Majors storeroom, shelf MM4 & MM5
100% Mirror	2	non-Majors storeroom, shelf MM2
50% Mirror	1	non-Majors storeroom, shelf MM2
Mercury lamp	1	non-Majors storeroom, shelf MM3
Mercury lamp holder	1	non-Majors storeroom, shelf MM2
Rubber bands	6	Physics office

Computers Needed?

• No.

• Lab setup:

  

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• The low-tech interferometer:
  
  • Note #1: Make sure the silvered edge of each mirror is on the side shown in the picture below.
  • Note #2: Attach each mirror with two rubber bands.
  • Note #3: The mirrors should be removed for storage.

  

• Adjust interference pattern until you see a "bullseye", or something close to it.

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• Mercury lamp on holder