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.




  • A beaker of water splits a light behind it into 3 images.
  • A strip of black paper can be placed in front of the light to model a black hole gravitational lens.
  • Best viewed in a darkened room.


        (use 6 V lamp)
        (set up on dark table and use dark background if necessary)


  • Typical view seen with room lights out and paper strip blocking center image.

Back