3B50.40 - Moiré Transparencies

Code Number:
Demo Title:
Moiré Transparencies
Wave Phenomenon
Area of Study:
Interference Models for Overhead Projector, and Moiré Patterns.

Tape one sheet of the interference models to the overhead projector. Moving another sheet over this one will produce a visible interference front.

The other Moiré patterns with the accompanied pictures, will give a variety of different effects. These effects will include 3-D and simulated motion.

  • James Lincoln, "Digital Scrolling and Moire' Pattern Animations", TPT, Vol. 58, #9, Dec. 2020, p. 684.
  • Carlos H. Wörner, "More About Moiré", TPT, Vol. 56, #4, Apr. 2018, p. 197. 
  • Gary Reich, "A Moiré Pattern-Based Thread Counter", TPT, Vol. 55, #7, Oct. 2017, p. 426.
  • Thomas Mills, "Beats with Microsoft Word", TPT, Vol. 44, #5, May 2006, p. 262.
  • Thomas B. Greenslade Jr., "Photocopied Beats", TPT, Vol. 43, #8, Nov. 2005, p. 514.
  • Bruce Bernero, "The Moiré Effect in Physics Teaching", TPT, Vol. 27, #8, Nov. 1989, p. 602.
  • H. Richard Crane, "Three‐Dimensional Moiré Patterns", TPT, Vol. 25, #2, Feb 1987, p. 102.
  • Richard A. Lohsen, "Paper Waves", TPT, Vol. 21, #8, Nov. 1983, p. 532, also A Potpourri of Physics Teaching Ideas - Optics and Waves, p. 228.
  • Arthur Eisenkraft and Peter G. Bergmann, "Can a Spot of Light Move Faster Than C?", TPT, Vol 19, #2, Feb. 1981, p. 127, also A Potpourri of Physics Teaching Ideas - Optics and Waves, p. 236.
  • Y. P. Hwu, "Two Good Demonstrations", TPT, Vol. 17, #4, Apr. 1979, p. 258.
  • Robert Prigo and Richard Wormsbecher, "Standing Wave Analogy using Pocket Combs", TPT, Vol. 15, #3, Mar. 1977, p. 187.
  • Peter Melzer, "Beat Production Analogy Using Pocket Combs", TPT, Vol. 14, #2, Feb. 1976, p. 120, also A Potpourri of Physics Teaching Ideas - Optics and Waves, p. 225.
  • W. N. Mathews Jr., "Superposition and Energy Conservation for Small Amplitude Mechanical Waves", AJP, Vol. 54, #3, Mar. 1986, p. 233.
  • Milton Stecher, "The Moiré Phenomenon", AJP, Vol. 32, #4, April 1964, p. 247.
  • Heather M. Hill, "Twisted Bilayer Graphene Enters a New Phase", Physics Today, Vol. 73, #1, Jan. 2020, p. 18.
  • Jearl Walker, "The Amateur Scientist: Moiré' Effects, The Kaleidoscope and Other Victorian Diversions", Scientific American, Vol. 239, #6, Dec. 1978, p. 182.
  • C. L. Stong, "The Amateur Scientist: Moiré Patterns Draw Contours, and a Meter Determines Current in Electrostatic Circuits", Scientific American, Vol. 229, #4, Oct. 1973, p. 120.
  • C. L. Stong, "The Amateur Scientist: Moiré Patterns Provide Both Recreation and Some Analogues for Solving Problems", Scientific American, Vol. 211, #5, Nov. 1964, p. 134.
  • C. L. Stong, "The Amateur Scientist: How to Locate a Thunderstorm and Track It By Detecting the Radio Waves It Generates", Scientific American, Vol. 208, #5, May 1963, p. 167.
  • "W-325. Moiré Pattern Transparencies", DICK and RAE Physics Demo Notebook, 1993.
  • "O-420. Singing Rod, Moiré & Speakers", DICK and RAE Physics Demo Notebook, 1993.
  • Gerald Oster, The Science of Moiré Patterns, 1964.
  • Gerald Oster, Moiré in Color, Sept. 1965.
  • George M. Hopkins', "Lantern Slide Illustrating Sound Waves", Experimental Science, Vol. 2, p. 208.
  • Paul Doherty and Don Rathjen, "Moiré Patterns", The Cheshire Cat, p. 74.
  • David Kutliroff, "19. Using an Overhead Projector to Illustrate Double Slit Interference", 101 Classroom Demonstrations and Experiments For Physics Teachers, p. 47.
  • Borislaw Bilash II and David Maiullo, "Wave Theory of Light", A Demo a Day: A Year of Physics Demonstrations, p. 348.
  • Jearl Walker, "7.12. Moiré Patterns", The Flying Circus of Physics Ed. 2, p. 309.
  • Jearl Walker, "5.142. Moiré Patterns", The Flying Circus of Physics with Answers.
  • Robert Ehrlich, "Q.2. Moiré Patterns", Turning the World Inside Out and 174 Other Simple Physics Demonstrations, p. 191 - 192.
  • Robert Ehrlich, "Q.1. Superposition of Circle Transparencies", Turning the World Inside Out and 174 Other Simple Physics Demonstrations, p. 186 - 191.
  • Ron Hipschman, "Moiré Patterns", Exploratorium Cookbook II, p. 133.1 - 133.4.
  • C. Harvey Palmer, "Experiment A20: Demonstration of the Use of Moiré Fringes in the Detection of Ultra Small Mirror Rotations", Optics - Experiments and Demonstrations, John Hopkins Press, 1962.
  • W. Bolton, "4. Moiré Fringes", Book 2 - Waves and Particles, Physics Experiments and Projects, 1968, p. 78 - 79.

Disclaimer: These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist.  The University of Iowa is not responsible for demonstrations performed by those using their own equipment or who choose to use this reference material for their own purpose.  The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources.  Performing all or any portion of any of these demonstrations, with or without revisions not depicted here entails inherent risks.  These risks include, without limitation, bodily injury (and possibly death), including risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition; and property loss or damage.  Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.