Nature, Volume 108Sir Norman Lockyer Macmillan Journals Limited, 1921 |
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Página 109
... Optical Instruments , embodying the Results of Scientific Researches conducted in German Optical Workshops . Edited by M. von Rohr . ( Forming vol . 1 of " The Theory of Optical Instruments . " ) Translated by R. Kanthack . Pp . xxiii + ...
... Optical Instruments , embodying the Results of Scientific Researches conducted in German Optical Workshops . Edited by M. von Rohr . ( Forming vol . 1 of " The Theory of Optical Instruments . " ) Translated by R. Kanthack . Pp . xxiii + ...
Página 239
... optical world the necessity for new glasses by means of which different optical instruments could be brought to much higher efficiency ; this feat having once been accomplished , the interest of the manu- facturing optician and the ...
... optical world the necessity for new glasses by means of which different optical instruments could be brought to much higher efficiency ; this feat having once been accomplished , the interest of the manu- facturing optician and the ...
Página 240
... optical glass manufacturers on the other ? The very presence in a country of an optical glass factory focusses interest on , and enlarges the conceptions of , the research problems connected with optical glass and its applications to ...
... optical glass manufacturers on the other ? The very presence in a country of an optical glass factory focusses interest on , and enlarges the conceptions of , the research problems connected with optical glass and its applications to ...
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