6D20.47 - Gratings - Babinet's Principle
Put the diffraction grating on the head of the overhead projector. When you put the special transparency plate on the overhead and turn it on you will have a spectrum of the primary colors on the top and the secondary colors directly underneath.
- C. Hanisch, M. Ziese, W. Oehme, "Newton's Green and Goethe's Purple - Color Experiments With LEDs", TPT, Vol. 59, #9, Dec. 2021, p. 713.
- Akira Hitachi, Momo Takata, "Babinet's Principle in the Fresnel Regime Studied Using Ultrasound", AJP, Vol. 78, # 7, July 2010, p. 678.
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