Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Том 82American Philosophical Society, 1940 |
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Сторінка 334
... plate should be toward the infinite light source and away from the mirror . Thereby , all considerations of the thickness of the correcting plate disappear , and the best pos- sible symmetry is obtained . One can gain nothing optically ...
... plate should be toward the infinite light source and away from the mirror . Thereby , all considerations of the thickness of the correcting plate disappear , and the best pos- sible symmetry is obtained . One can gain nothing optically ...
Сторінка 347
... plate . The diaphragm need be only a slip cover on the tube of the camera and could help serve as a dew cap . The correcting plate of each of the new type cameras is of higher curvature than the Schmidt of the same focal length and ...
... plate . The diaphragm need be only a slip cover on the tube of the camera and could help serve as a dew cap . The correcting plate of each of the new type cameras is of higher curvature than the Schmidt of the same focal length and ...
Сторінка 348
... plate , the plane side should be turned toward the incident parallel light . For faster cameras and for cameras requiring excellent color correction , an achromatic correcting plate should be made . A later communication will give the ...
... plate , the plane side should be turned toward the incident parallel light . For faster cameras and for cameras requiring excellent color correction , an achromatic correcting plate should be made . A later communication will give the ...
Зміст
Vascularity in the Brains of Tailed Amphibians II Necturus | 395 |
Studies on Destruction of Red Blood Cells THOMAS HALE | 411 |
Conjugation in Opisthonecta henneguyi a Free Swimming | 437 |
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