Paper Plate Education
Activity: The Vanishing Spacecraft
Draw a small planet and a spacecraft on the paper plate
about 6 cm (2 ¼ inches) apart.
Use the right eye to make the spacecraft
vanish. Position the ringed planet
in front of the right eye at arms length.
Close the left eye. Concentrate
your vision from your right eye on the planet and slowly move the paper plate to
your face. As the planet
approaches, note when the spacecraft disappears.
Use the left eye to make the planet vanish. Position the spacecraft in front of your left eye at arms length. Close your right eye. Stare at the spacecraft while slowly moving the paper to your face. Note when the planet disappears and reappears. You have discovered the blind spot in each eye. Why dont we have a blind spot(s) in our vision when we use both eyes?
Contributed by Bob Sledz.
GLPA Proceedings, 1997, p. 36.
Copyright ©2012 Chuck Bueter. All rights reserved.