blue filter gel samples
Date: 1970-1985
Inventory Number: 2004-1-0269
Classification: Filters
Subject:
Maker: Edwin H. Land (1909 - 1991)
User: Scientific American (founded 1845)
Cultural Region:
Place of Origin:
Dimensions:
21.5 × 13 × 0.2 cm (8 7/16 × 5 1/8 × 1/16 in.)
Description:
Four transparencies, each with a blue plastic or gelatin strips mounted in black cardboard. Each has an identical graph with the y-axis for the percent of transmittance and the x-axis for the wavelength, in white line drawing. All stored in a white enveloppe.
Signedunsigned
FunctionUsed and designed for Edwin Land's Retinex color vision theory. Might have been used for articles or lectures.
Curatorial RemarksThe enveloppe mentions that these were used in Edwin Land's 1977 Scientific American article. There are no evidence this information is accurate.
ProvenanceThis object belonged to Edwin H. Land and came from the Rowland Institute, Harvard University. Gift of the Edwin H. Land Family.