| 1. |
Note on the D.C. Characteristics of the String Galvanometer |
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Review of Scientific Instruments,
Volume 12,
Issue 7,
1941,
Page 351-354
F. T. Rogers,
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摘要:
A useful fifth‐degree equation is derived for the d.c. behavior of the string galvanometer; it contains seven parameters, three for the (symmetric) magnetic field, three for the (elastic) suspension, and one for the length of the string. Examples and a discussion are given concerning the practical use of this equation.
ISSN:0034-6748
DOI:10.1063/1.1769896
出版商:AIP
年代:1941
数据来源: AIP
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| 2. |
Automatic Speed Control for the Air‐Driven Ultracentrifuge |
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Review of Scientific Instruments,
Volume 12,
Issue 7,
1941,
Page 355-357
Alexandre Rothen,
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摘要:
A speed control for the air‐driven ultracentrifuge based on a stroboscopic principle is described. The pressure of the air driving the centrifuge is automatically decreased or increased according as the centrifuge tends to accelerate or decelerate. The speed of the centrifuge can be maintained constant within less than one revolution a second.
ISSN:0034-6748
DOI:10.1063/1.1769897
出版商:AIP
年代:1941
数据来源: AIP
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| 3. |
Electrical Bombardment of Biological Materials II. An Electron Tube for the Production of Homogeneous Beams of Cathode Rays from Ten to One Hundred Kilovolts |
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Review of Scientific Instruments,
Volume 12,
Issue 7,
1941,
Page 358-362
O. Morningstar,
R. D. Evans,
C. P. Haskins,
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PDF (289KB)
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摘要:
An apparatus is described for irradiation of biological and chemical materials in vacuum with electron beams of intensities varying between 10−6and 10−10coulomb per square centimeter and of energies ranging between 10 and 100 kv. The beam can be easily adjusted and scanned for homogeneity. Through an arrangement of stops, a large number of targets can be conveniently irradiated in a relatively short period.
ISSN:0034-6748
DOI:10.1063/1.1769898
出版商:AIP
年代:1941
数据来源: AIP
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| 4. |
An Integrator for Small Currents |
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Review of Scientific Instruments,
Volume 12,
Issue 7,
1941,
Page 362-365
Bob E. Watt,
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PDF (234KB)
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摘要:
A current integrator employing a neon bulb has been used; it is found to require no correction of any kind, and to be independent of power supply fluctuations. The lowest current for which the integrator can be considered reliable is 0.05 microampere. Currents up to 30 microamperes have been integrated properly, and it is believed that currents up to 200 microamperes could be integrated by a similar circuit.
ISSN:0034-6748
DOI:10.1063/1.1769899
出版商:AIP
年代:1941
数据来源: AIP
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| 5. |
An Ionization Gauge Circuit with a ``Magic Eye'' |
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Review of Scientific Instruments,
Volume 12,
Issue 7,
1941,
Page 366-367
W. E. Parkins,
W. A. Higinbotham,
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ISSN:0034-6748
DOI:10.1063/1.1769900
出版商:AIP
年代:1941
数据来源: AIP
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| 6. |
A Thyratron‐Controlled Annealing Furnace |
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Review of Scientific Instruments,
Volume 12,
Issue 7,
1941,
Page 367-368
Lester Tarnopol,
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PDF (164KB)
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ISSN:0034-6748
DOI:10.1063/1.1769901
出版商:AIP
年代:1941
数据来源: AIP
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| 7. |
Construction of Glass Bellows |
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Review of Scientific Instruments,
Volume 12,
Issue 7,
1941,
Page 368-369
D. J. Pompeo,
Edward Meyer,
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PDF (161KB)
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ISSN:0034-6748
DOI:10.1063/1.1769902
出版商:AIP
年代:1941
数据来源: AIP
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| 8. |
Insulated Vacuum Leads |
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Review of Scientific Instruments,
Volume 12,
Issue 7,
1941,
Page 369-370
D. F. Bleil,
C. D. Hause,
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PDF (166KB)
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ISSN:0034-6748
DOI:10.1063/1.1769903
出版商:AIP
年代:1941
数据来源: AIP
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| 9. |
New Instruments |
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Review of Scientific Instruments,
Volume 12,
Issue 7,
1941,
Page 370-373
Wm. F. Roeser,
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PDF (333KB)
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ISSN:0034-6748
DOI:10.1063/1.1769904
出版商:AIP
年代:1941
数据来源: AIP
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| 10. |
New Materials |
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Review of Scientific Instruments,
Volume 12,
Issue 7,
1941,
Page 374-380
A. R. Olpin,
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PDF (599KB)
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ISSN:0034-6748
DOI:10.1063/1.1769905
出版商:AIP
年代:1941
数据来源: AIP
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