1. |
Infra‐Red Instrumentation and Techniques |
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Review of Scientific Instruments,
Volume 19,
Issue 3,
1948,
Page 135-178
Van Zandt Williams,
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PDF (3046KB)
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ISSN:0034-6748
DOI:10.1063/1.1741226
出版商:AIP
年代:1948
数据来源: AIP
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2. |
A Rapid Method for Preparing Powder Camera Specimens with Cellulose Acetate Capillary Tubes |
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Review of Scientific Instruments,
Volume 19,
Issue 3,
1948,
Page 179-180
Karl E. Beu,
Howard H. Claassen,
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PDF (116KB)
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摘要:
Several details are described in the preparation of capillary tubes for x‐ray power specimens which greatly facilitate the synthesis of such tubes and their subsequent removal from the pilot wire. The over‐all method employed is essentially that of Frickeet al.Wires of 22‐gauge copper, after annealing in an atmosphere of helium, are cleaned and dipped into the cellulose acetate solution by means of a crank‐driven rack. The rate of withdrawal determines the wall thickness. A method is given for centering the filled specimen tubes precisely in the powder camera by the use of a centering jig.
ISSN:0034-6748
DOI:10.1063/1.1741227
出版商:AIP
年代:1948
数据来源: AIP
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3. |
Erratum: Comparison of Glower and Globar Sources for Infra‐Red Spectrometry |
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Review of Scientific Instruments,
Volume 19,
Issue 3,
1948,
Page 180-180
R. A. Friedel,
A. G. Sharkey,
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PDF (62KB)
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ISSN:0034-6748
DOI:10.1063/1.1741228
出版商:AIP
年代:1948
数据来源: AIP
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4. |
An Automatic Simultaneous Equation Computer and Its Use in Solving Secular Equations |
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Review of Scientific Instruments,
Volume 19,
Issue 3,
1948,
Page 181-187
Willis A. Adcock,
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PDF (472KB)
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摘要:
A feed‐back method is described which is suitable for an automatic computer solving linear simultaneous equations and secular equations. This method is more general than is the Gauss‐Siedel method. The design for an analog computer based on this feed‐back method is outlined. This design utilizes resistive voltage dividers to represent coefficients and voltages to represent the variables. The variables are automatically adjusted by the feed‐back system. The performance obtained on a 4‐equation model is given. Usually an accuracy of better than one percent is obtained.
ISSN:0034-6748
DOI:10.1063/1.1741229
出版商:AIP
年代:1948
数据来源: AIP
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5. |
The D.C. Thermal Characteristics of Microwave Bolometers |
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Review of Scientific Instruments,
Volume 19,
Issue 3,
1948,
Page 188-195
Edward Peskin,
Ernst Weber,
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PDF (423KB)
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ISSN:0034-6748
DOI:10.1063/1.1741230
出版商:AIP
年代:1948
数据来源: AIP
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6. |
Simple RC Equalizer Circuits |
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Review of Scientific Instruments,
Volume 19,
Issue 3,
1948,
Page 196-196
H. Logemann,
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PDF (60KB)
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ISSN:0034-6748
DOI:10.1063/1.1741231
出版商:AIP
年代:1948
数据来源: AIP
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7. |
New Instruments |
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Review of Scientific Instruments,
Volume 19,
Issue 3,
1948,
Page 197-200
W. A. Wildhack,
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PDF (373KB)
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ISSN:0034-6748
DOI:10.1063/1.1741232
出版商:AIP
年代:1948
数据来源: AIP
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8. |
New Materials |
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Review of Scientific Instruments,
Volume 19,
Issue 3,
1948,
Page 201-201
Forest K. Harris,
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PDF (79KB)
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ISSN:0034-6748
DOI:10.1063/1.1741233
出版商:AIP
年代:1948
数据来源: AIP
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