200 resultados para Transmitting telescope
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2 scans sharing same hs #, one with suffix 1of2 for full stereograph, 2of2 for crop to right side image only
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"Bibliography on job evaluation": p. 107-108. "Bibliography on cost of living": p. 116-118.
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Mode of access: Internet.
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Issued also as House document 403, v.1-5, 87th Cong., 2d sess.
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Referred to the Committee on Irrigation and Reclamation and ordered printed February 12, and June 20, 1940.
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Includes bibliographical references.
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Mode of access: Internet.
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Mode of access: Internet.
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Referred to the Committee on military affairs and ordered printed with illustrations May 19, 1937.
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"June 8, 1942."
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Richard Bull, architect. Known at various times as Detroit Observatory, Campus Observatory, Old Observatory. Stereoscopic photograph showing the 1868 director's residence addition. James C. Watson (wearing top hat) is seen with a telescope on a tripod; his wife, Annette, is standing at the porch. (Source: A Creation of His Own: Tappan's Detroit Observatory by Patricia S. Whitesell) On verso: Views at University of Michigan, Ann Arbor
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The measurement of 28O-Mev neutron cross sections of various nuclei is described. The neutron beam used results from 340-Mev protons in the 184-in. cyclotron striking a 2-in. Be target. The neutron detector consists of a double coincidence anthracene scintillation counter telescope which counts recoil protons scattered at 15 deg from a paraffin cylinder placed in the collimated neutron beam. A 2-in. Cu absorber placed between the counters assures that only protons of energy greater than 250 Mev are counted. The cross sections for all nuclei measured from Li to Pb are smaller than the corresponding cross sections measured at 90 Mev by factors between 0.5 and 0.6.
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Includes index.