Open AccessThe variation in the blackening of a photographic plate with time of exposure, total energy remaining constant
Author(s) -
P. S. Helmick
Publication year - 1916
Publication title -
hathi trust digital library (the hathitrust research center)
Language(s) - English
Resource type - Dissertations/theses
DOI - 10.17077/etd.asro3q2x
Subject(s) - constant (computer programming) , variation (astronomy) , art , mathematics , physics , computer science , astronomy , programming language
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