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Author (up) Downey, J.W. url  openurl
  Title Determination of minimum light sense and retinal dark adaptation with presentation of a new type of photometer Type Journal Article
  Year 1919 Publication American Journal of Ophthalmology Abbreviated Journal  
  Volume 2 Issue 1 Pages 13-20  
  Keywords Vision; Instrumentation  
  Abstract This paper reviews the principal hypotheses with reference to light and dark adaptation, and suggests a practical photometer, using a radioactive substance as a standard of comparison. With three illustrations, and experimental findings with this instrument.  
  Corporate Author Thesis  
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  Language Summary Language Original Title  
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  Series Volume Series Issue Edition  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2418  
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