O2-03: PERSISTENCE OF VISION - MAGIC WAND

ID Code: O2-03
Purpose: Demonstrates the persistence of vision
Description: The slide of Einstein (or any of your favorite slides) is focused a few feet from the projector, but unfocused where it strikes any surface on which it might be identifiable. When a white stick pointer is moved rapidly up and down through the focal plane the image of Einstein can easily be identified.
Availability: Available