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.




  • Start same side pulses simultaneously from the ends of the spring and knock out a cup in the middle as the pulses add to make a bigger pulse.
  • Start opposite side pulses simultaneously from the ends and no cups are disturbed because the pulses cancel each other when they meet.

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