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Code Number: 6D20.47
Demo Title: Gratings - Babinet's Principle
Condition: Good
Principle: Home Made Diffraction Gratings with Wire or Hair
Area of Study: Optics
Equipment:
Diffraction grating, special transparency plate with slit and slat.
Procedure:
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.
References:
- 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.
- H. F. Webster, "A Demonstration of Babinet's Principle Using Two-Dimensional Gratings", AJP, Vol. 39, #1, Jan. 1971, p. 123.
- C. L. Andrews, "Demonstration of Babinet's Principle", AJP, Vol. 39, #1, Jan. 1971, p. 122.