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goggles modified for optics experiments

Date1975-1980
Inventory Number2004-1-0114
ClassificationGoggles
Subject
    Maker Polaroid Corporation 1937-present
    User Edwin H. Land 1909 - 1991
    Cultural Region
      Place of Origin
        Dimensions10.2 × 17.3 × 10.3 cm (4 × 6 13/16 × 4 1/16 in.)
        Material
          DescriptionSafety goggles modified for optical experiments with color vision. Only the right eye can see; left eye is blocked. There is a built-in Copal shutter (made in Japan) controlled by a handheld device. The shutter is powered by a standard 9-V battery (which has been disposed of since the photograph was taken). An on-off switch has been added.
          Signedon shutter: POLAROID / MP-4 on battery: RAYOVAC
          FunctionUsed by Land for his experiments with color vision (Retinex theory). The goal of these googles was to normalize the eye to the experimental situation.
          ProvenanceThis object belonged to Edwin H. Land and came from the Rowland Institute, Harvard University. Gift of the Edwin H. Land Family.
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