1. |
A SELF RECORDING SPECTROMETER |
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Review of Scientific Instruments,
Volume 2,
Issue 10,
1931,
Page 585-599
H. M. Randall,
John Strong,
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ISSN:0034-6748
DOI:10.1063/1.1748736
出版商:AIP
年代:1931
数据来源: AIP
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2. |
A TWENTY‐ONE FOOT VACUUM SPECTROGRAPH FOR THE EXTREME ULTRAVIOLET |
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Review of Scientific Instruments,
Volume 2,
Issue 10,
1931,
Page 600-610
George R. Harrison,
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PDF (463KB)
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摘要:
The construction of a vacuum spectrograph containing a six inch concave speculum grating of 21 ft. radius of curvature is described. Exposures of the order of magnitude of one hour suffice to give satisfactory spectrograms having a dispersion of 2.7A per mm in the first order, the entire range 2000–1000A being recorded at one setting on a 16 inch plate. By means of a vacuum‐tight screw up to thirty exposures can be taken on a single plate, and introduction of a stop‐cock in the slit tube allows source and slit to be changed at will. A gate is provided which allows air to be admitted to the 40 liter camera box without destroying the vacuum in the 830 liter body of the spectrograph, to facilitate the changing of plates. By means of a Cenco Hypervac pump and three 4‐stage Gaede diffusion pumps the instrument can be evacuated from atmospheric pressure to below 10−4mm in an hour or less. High resolving power has been obtained in hot spark spectra of the elements of the first long period, which should facilitate wave‐length measurements on the spectra of ionized atoms; the main purpose of the instrument, however, is to enable intensity measurements to be satisfactorily made in the Schumann region.
ISSN:0034-6748
DOI:10.1063/1.1748737
出版商:AIP
年代:1931
数据来源: AIP
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3. |
DESIGN AND CONSTRUCTION OF AN ELECTRO‐MAGNET FOR INVESTIGATION OF THE MAGNETIC PROPERTIES OF ATOMS AND MOLECULES |
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Review of Scientific Instruments,
Volume 2,
Issue 10,
1931,
Page 611-617
E. J. Shaw,
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PDF (284KB)
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ISSN:0034-6748
DOI:10.1063/1.1748738
出版商:AIP
年代:1931
数据来源: AIP
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4. |
THE NEW BROWN POTENTIOMETER RECORDER |
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Review of Scientific Instruments,
Volume 2,
Issue 10,
1931,
Page 618-625
T. R. Harrison,
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PDF (351KB)
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ISSN:0034-6748
DOI:10.1063/1.1748739
出版商:AIP
年代:1931
数据来源: AIP
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5. |
AN X‐RAY POWDER DIFFRACTION APPARATUS OF NEW DESIGN |
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Review of Scientific Instruments,
Volume 2,
Issue 10,
1931,
Page 626-631
T. M. Hahn,
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PDF (286KB)
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ISSN:0034-6748
DOI:10.1063/1.1748740
出版商:AIP
年代:1931
数据来源: AIP
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6. |
A COMPARISON OF MERCURIAL AND ANEROID SPHYGMOMANOMETERS |
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Review of Scientific Instruments,
Volume 2,
Issue 10,
1931,
Page 632-637
Bradford Noyes,
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PDF (262KB)
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ISSN:0034-6748
DOI:10.1063/1.1748741
出版商:AIP
年代:1931
数据来源: AIP
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7. |
A FALLING PLATE FLASHOMETER |
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Review of Scientific Instruments,
Volume 2,
Issue 10,
1931,
Page 638-643
W. E. Forsythe,
M. A. Easley,
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PDF (218KB)
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ISSN:0034-6748
DOI:10.1063/1.1748742
出版商:AIP
年代:1931
数据来源: AIP
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8. |
PHASE MEASUREMENTS WITH THE CATHODE RAY OSCILLOGRAPH |
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Review of Scientific Instruments,
Volume 2,
Issue 10,
1931,
Page 644-648
Lawrence A. Wood,
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PDF (142KB)
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ISSN:0034-6748
DOI:10.1063/1.1748743
出版商:AIP
年代:1931
数据来源: AIP
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9. |
ELECTRODEPOSITED METAL FOILS |
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Review of Scientific Instruments,
Volume 2,
Issue 10,
1931,
Page 649-653
H. Kersten,
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ISSN:0034-6748
DOI:10.1063/1.1748744
出版商:AIP
年代:1931
数据来源: AIP
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10. |
ABSTRACTS OF ARTICLES RELATING TO NEW INSTRUMENTS AND METHODS |
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Review of Scientific Instruments,
Volume 2,
Issue 10,
1931,
Page 654-664
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PDF (443KB)
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ISSN:0034-6748
DOI:10.1063/1.1748745
出版商:AIP
年代:1931
数据来源: AIP
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