Thursday, 05 June 2014 14:57
O3-21: BENHAM TOP
Additional Info
- ID Code: O3-21
- Purpose: Demonstrate perception of color due to periodic excitation of the eye.
- Description: A disc contains half black and half white fields with various sets of azimuthal black lines on the white field. Rotating the disc a few times per second creates circles which appear to have various mild coloration, from greens to browns to blues. Rotating in the opposite direction changes the colors.
- Availability: Available
- References: REFERENCES: (PIRA 6J11.11)
- Videos-1: For further information on the Benham disk see tha Exploratorium site:
- Videos-2: including a template for the disc at:
Published in
O3 Color Vision
Tagged under
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O3-01: COLOR PERCEPTION IN SHADOWS - SLIDE PROJECTORS
Demonstrate complementary color shadows. Read More
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O3-02: COLOR PERCEPTION IN SHADOWS - DOUBLE POINT SOURCE
Demonstrate complementary color shadows. Read More
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O3-03: LAND EFFECT
Demonstrate the Land effect using red and white light. Read More
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O3-04: GREENER THAN GREEN
Demonstrate negative color afterimage due to saturation. Read More
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O3-11: COLOR BLINDNESS TESTS
Test your students for color blindness. Read More
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O3-12: COLOR BLINDNESS TESTS WITH VIDEO PROJECTOR
Test class for color blindness, and demonstrate how color blind people with certain defects see the color blindness tests. Read More
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O3-21: BENHAM TOP
Demonstrate perception of color due to periodic excitation of the eye. Read More
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O3-22 BIDWELL'S DISC
Demonstrates positive and negative color afterimages
Read More
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