PURPOSE: Demonstrate color mixing of lights.
DESCRIPTION: This is a commercial color mixing gizmo that has a red light on top, a green light on lower left, and a blue light on lower right (well, actually, a white light with a filter in each position). When the center switch is pushed, the three lights go on, and mixtures can be seen on the little pyramid in the center of the screen: red + blue = magenta on right, and red + green = yellow on left. We added a blue light on the center left, which when turned on in combination with the main three lights produces white at the left by adding blue to the yellow created by the red + green corner lights. Similarly, a green light on the center right adds to magneta of the red + blue combination to produce white light.
Other possibilities are discussed in the manual, which will be found in the Demonstration Reference File.
SUGGESTIONS: This is nice for students to diddle with individually.
REFERENCES: (PIRA 6F10.11)
EQUIPMENT: Color mixing apparatus.
SETUP TIME: None.
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