Blind Spot Test Cards

 

Code Number: 6J10.30

Demo Title: Blind Spot

Condition: Good

Principle: Parameters of the Human Eye

Area of Study: Optics

Equipment:

Blind Spot Card.

Procedure:

At a distance of about 50 cm., cover one eye and look at the coin on the blind spot chart.  Slowly move your gaze from the coin to each of the spots in turn.  When the right spot is looked at the coin will seem to disappear from view.

References:

  • Camille L. Wainwright, "An Empirical Verification", TPT, Vol. 37, #9, Dec. 1999, p. 517.
  • Jeff Sanny, "Measuring the Diameter of Your Blind Spot", TPT, Vol. 37, #6, Sept. 1999, p. 348.
  • Andrew DePino Jr., "The Disappearing Student", TPT, Vol. 36, #8, Nov. 1998, p. 491.
  • David R. Lapp and James E. Keenan, "Cow's Eye Dissection in the Physics Lab", TPT, Vol. 29, #8, Nov. 1991, p. 502.
  • Adolf Cortel, "Simple Experiments on the Physics of Vision: The Retina", Physics Education, Vol. 40 #4, July 2005, p. 325.
  • N. Farkas, K. M. Donnelly, P. N. Henriksen, and R. D. Ramsier, "The Blind Spot: Re-Educating Ourselves About Visual Images", Physics Education, Vol. 39, #3, May 2004, p. 294.
  • "O-580. Blind Spot", DICK and RAE Physics Demo Notebook.
  • Paul Doherty and Don Rathjen, "Blind Spot", The Cheshire Cat, p. 21.
  • "How to Find the Blind Spot in the Eye", The Boy Scientist, p. 188.
  • Jearl Walker, "7.3, Decapitation with the Blind Spot", The Flying Circus of Physics Ed. 2, p. 305.
  • Janice VanCleave, "Vanishing Ball", Biology for Every Kid, p. 164.
  • Janice VanCleave, "69. Vanishing Ball", Janice VanCleave's 201 Awesome, Magical, Bizarre, & Incredible Experiments, p. 38.
  • Raymond Bruman, "Blind Spot", Exploratorium Cookbook I, p. 36.1 - 36.2.
  • Stan Gibilisco, "The Blind Spot", Puzzles, Paradoxes, & Brain Teasers Optical Illusions, Vol. 4.
  • C. Harvey Palmer, "Experiment A18: Some Properties of the Human Eye", Optics - Experiments and Demonstrations, John Hopkins Press, 1962.
  • Martin Keen, "Experiments With Human Senses", Let's Experiment, 1968, p. 153 - 155.
  • UNESCO, "B. Your Senses", 700 Science Experiments for Everyone, p. 207 - 209.
  • Sara Stein, "Brain Readouts", The Science Book, p. 191.
  • Tik L. Liem, "Are We Partially Blind?", Invitations to Science Inquiry - Supplement to 1st and 2nd Ed. p. 149.
Motion Induced Blindness: From Michael's "Optical Illusions & Visual Phenomena"