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    Dr. Ken Lian of Spectrolab stands by a one-kilowatt flat-plate photovoltaic array undergoing field tests at a test farm in Sylmar, April 18, 1979. Spectrolab began as a manufacturer of optical filters and mirrors for use in the aerospace industry and provided solar arrays for Explorer 6, which in 1959 sent back the first satellite photo of Earth. Robert and Betty Franklin Collection. San Fernando Valley History Digital Library.

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