Early in the nineteenth century, W. Herschel introduced a striking demonstration of interference arising from many coherent rays. Today’s students can reproduce this demonstration and attain beautiful multiple-beam interference patterns.

This content is only available via PDF.
AAPT members receive access to The Physics Teacher and the American Journal of Physics as a member benefit. To learn more about this member benefit and becoming an AAPT member, visit the Joining AAPT page.