| 1. |
Selective Service Appeals |
| |
Review of Scientific Instruments,
Volume 13,
Issue 7,
1942,
Page 275-276
Preview
|
PDF (119KB)
|
|
ISSN:0034-6748
DOI:10.1063/1.1770034
出版商:AIP
年代:1942
数据来源: AIP
|
| 2. |
From THE PHYSICIST'S WAR Bulletin No. 3 of the American Institute of Physics |
| |
Review of Scientific Instruments,
Volume 13,
Issue 7,
1942,
Page 276-277
Preview
|
PDF (119KB)
|
|
ISSN:0034-6748
DOI:10.1063/1.1770035
出版商:AIP
年代:1942
数据来源: AIP
|
| 3. |
Sensitive Measurement of Impedance, Reactance, Frequency, and Phase Relationships with an Electronic Phase Bridge |
| |
Review of Scientific Instruments,
Volume 13,
Issue 7,
1942,
Page 277-281
R. H. Brown,
Preview
|
PDF (271KB)
|
|
摘要:
Methods are described for making convenient and sensitive measurements of impedance, reactance, frequency, and phase relationships by means of an electronic phase bridge which is composed of a phase sensitive detector and an ``unbalanced'' bridge circuit. A general theory of the operation of Cosens' phase sensitive detector is presented. Peculiar sources of error encountered in the use of the electronic phase bridge are discussed and methods of eliminating them outlined.
ISSN:0034-6748
DOI:10.1063/1.1770036
出版商:AIP
年代:1942
数据来源: AIP
|
| 4. |
Attenuated Superconductors I. For Measuring Infra‐Red Radiation |
| |
Review of Scientific Instruments,
Volume 13,
Issue 7,
1942,
Page 281-292
D. H. Andrews,
W. F. Brucksch,
W. T. Ziegler,
E. R. Blanchard,
Preview
|
PDF (797KB)
|
|
摘要:
An apparatus for measuring infra‐red radiation has been constructed of fine tantalum wire, operating at a temperature of 3.22–3.23°K in the transition zone between superconduction and normal conduction. The tantalum coil is mounted on a thermostated plate with temperature electrically controlled and operates in a special self‐regulating shunt circuit by which its own temperature is automatically maintained constant. The ratio of developed electrical potential to radiation flux received is 150 &mgr;v (erg cm−2sec.−1)−1. Minimum detectable flux isca.10−3erg sec.−1. Absolute measurements of intensity of radiation from sources at temperatures between 24° and 55° are consistent with the Stefan‐Boltzmann law showing that instrument corrections for reflectivity, window‐absorption, and changes with wave‐length are very small.
ISSN:0034-6748
DOI:10.1063/1.1770037
出版商:AIP
年代:1942
数据来源: AIP
|
| 5. |
Volumetric Microrespirometer for Aquatic Organisms |
| |
Review of Scientific Instruments,
Volume 13,
Issue 7,
1942,
Page 292-295
P. F. Scholander,
G. A. Edwards,
Preview
|
PDF (221KB)
|
|
ISSN:0034-6748
DOI:10.1063/1.1770038
出版商:AIP
年代:1942
数据来源: AIP
|
| 6. |
A Method for Grinding the Internal Wall of Small Bore Capillaries |
| |
Review of Scientific Instruments,
Volume 13,
Issue 7,
1942,
Page 295-296
Elder P. de Turk,
Arthur E. Lockenvitz,
Preview
|
PDF (140KB)
|
|
ISSN:0034-6748
DOI:10.1063/1.1770039
出版商:AIP
年代:1942
数据来源: AIP
|
| 7. |
Plastic Wedge Compensator |
| |
Review of Scientific Instruments,
Volume 13,
Issue 7,
1942,
Page 296-297
Charles T. Piecewicz,
Preview
|
PDF (136KB)
|
|
ISSN:0034-6748
DOI:10.1063/1.1770040
出版商:AIP
年代:1942
数据来源: AIP
|
| 8. |
Piezometer for Transient Pressures |
| |
Review of Scientific Instruments,
Volume 13,
Issue 7,
1942,
Page 297-298
A. W. Lawson,
P. H. Miller,
Preview
|
PDF (147KB)
|
|
ISSN:0034-6748
DOI:10.1063/1.1770041
出版商:AIP
年代:1942
数据来源: AIP
|
| 9. |
A Method for Measurement of the Contact and Volume Resistance of Semiconductors |
| |
Review of Scientific Instruments,
Volume 13,
Issue 7,
1942,
Page 298-299
P. H. Miller,
Preview
|
PDF (147KB)
|
|
ISSN:0034-6748
DOI:10.1063/1.1770042
出版商:AIP
年代:1942
数据来源: AIP
|
| 10. |
A Variable Capillary Tube Leak |
| |
Review of Scientific Instruments,
Volume 13,
Issue 7,
1942,
Page 299-300
D. S. Bayley,
Preview
|
PDF (135KB)
|
|
ISSN:0034-6748
DOI:10.1063/1.1770043
出版商:AIP
年代:1942
数据来源: AIP
|
首页
