Oscillations and Waves > Waves > Interference and Diffraction DCS# 3B50.20

TWO-SOURCE INTERFERENCE TRANSPARENCIES


APPARATUS
document camera
202
set of transparencies with concentric circles 202-21-C5


DESCRIPTION
Overlap two transparencies of concentric circles to show a two-source interference pattern.  You can vary the spacing of the sources, and the wavelength (using the second set of transparencies).

These animations are similar:

http://www.falstad.com/ripple/

http://demonstrations.wolfram.com/MoirePatternOfTwoEquallySpacedCircularRingPatterns/