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A Portable Low Level Lightmeter
[report]
1962
unpublished
Preserved Fulltext
Explained herein is the operation and calibration of a portable low level lightmeter designed in connection with the work on the problems of light amplification. This lightmeter can be used to determine the light levels from as low as -8 10 foot-Lambert (ft-L). iii > V a 0 J
doi:10.21236/ad0287884
fatcat:psgwtzza3rd6ja7puao6txdh2a