/ Light source efficiency scale in lumens per watt

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Title: Light source efficiency scale in lumens per watt
Creator: Fadler, Joseph, photographer
Date Created and/or Issued: 1959-12-20
Contributing Institution: Huntington Library
Collection: Southern California Edison Photographs and Negatives
Rights Information: For information on using Huntington Library materials, please see Reproductions of Huntington Library Holdings: https://www.huntington.org/library-rights-permissions
Description: Light source efficiency scale in lumens per watt.
Extent: Safety Film ; 4x5
Identifier: 06 - 71449
http://hdl.huntington.org/cdm/ref/collection/p16003coll2/id/46929
Subject: Graphs. (lctgm)
Place: California
Source: Southern California Edison Photographs and Negatives
Joseph Fadler (SCE)
Southern California Edison Photographs and Negatives, Huntington Digital Library

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