Web Accessibility - Legacy Page

This page has been identified as older than June 1, 2014. Per MSU's Web Accessibility agreement with the Office for Civil Rights, content that has not been updated since this date is considered "legacy" and does not need accessibility errors remediated.

If you make edits to this page and republish it, you will need to correct any accessibility errors that exist - all MSU web pages created or updated past June 1, 2014 are required to meet our current Web Accessibility standards. Visit our help center article on working with legacy web pages and content for more information.



  • When two lucite bars are pressed together, a beam of light will pass through the first bar to the second.
  • Room lights must be off.










        (select good mating surfaces, press bars together and search for sweet spot with beam)

  • Typical view seen in a darkened room.




        (use video camera in large classrooms)
        (use CSM setting at ISO 400 and manual focus at .3 m)

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