Purkinje Effect.
P.I.R.A. #: 6J11.10
Illustrates: How the human eye responds to color.
Description: The eye responds less to red than it does to blue at low light levels.
Size: 12" h x 20" w
Notes: Place 2 x 2 slide into Prado and project onto screen. Slide is 1/2 red and 1/2 blue. Darken room, effect becomes stronger with time. Use Variac with the projector.
Hazard: None.
Condition: Good.
