ScienceJohn Michels (Journalist) 1938 |
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Page 154
... light . Interposed between the lamp and the photo- electric cells are 2 - inch square light filters , selected from molded filters of Corning Glass Works to trans- mit only light of the wave - length absorbed by the substance being ...
... light . Interposed between the lamp and the photo- electric cells are 2 - inch square light filters , selected from molded filters of Corning Glass Works to trans- mit only light of the wave - length absorbed by the substance being ...
Page 299
John Michels (Journalist). DISCUSSION SCIENTIFIC BOOKS. LIGHT EYES AND GLARE SENSITIVITY IT has been noted that light - eyed persons can see less well under low illumination than dark - eyed per- sons.1 It is also well known that albinos ...
John Michels (Journalist). DISCUSSION SCIENTIFIC BOOKS. LIGHT EYES AND GLARE SENSITIVITY IT has been noted that light - eyed persons can see less well under low illumination than dark - eyed per- sons.1 It is also well known that albinos ...
Page 336
... light cord are attached to one side of the hinged back door . The dimensions given in Fig . 1 are for an apparatus to accommodate an Eastman kodak number 620 , with a portrait attachment . Using supersensitive film , excellent ...
... light cord are attached to one side of the hinged back door . The dimensions given in Fig . 1 are for an apparatus to accommodate an Eastman kodak number 620 , with a portrait attachment . Using supersensitive film , excellent ...
Contents
CHAIKOFF | 1 |
CARR W H Raymond H Torrey 419 | 13 |
P British Association 404 | 15 |
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