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This animation models a diffraction grating that is a series of parallel slits in a material. As you change the wavelength, notice where the bright spots are. You can move the protractor around to measure angles (position is given in centimeters and angle is given in degrees). Restart. How many slits per millimeter does the diffraction grating have?
Problem authored by Anne J. Cox.
Script authored by Anne J. Cox and Morten Brydensholt.
© 2004 by Prentice-Hall, Inc. A Pearson Company