| 1. |
APPLICATION OF QUARTZ CRYSTALS TO THE MODULATION OF LIGHT |
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Canadian Journal of Research,
Volume 16a,
Issue 4,
1938,
Page 77-81
D. W. R. McKinley,
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摘要:
The resonatingX-cut quartz crystal has been used as a self-compensator for white light modulation.The properties of the 49° cut quartz crystal are described. This crystal combines low power input and stable high frequency with a wide light aperture and improved light output. For many purposes a convergent beam of light may be used, without the need of a compensating device.
ISSN:1923-4287
DOI:10.1139/cjr38a-008
出版商:NRC Research Press
年代:1938
数据来源: NRC
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| 2. |
THE INFLUENCE OF THICKNESS ON THE MEASURED THERMAL CONDUCTIVITY OF FIBREBOARD AND ROCK WOOL |
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Canadian Journal of Research,
Volume 16a,
Issue 4,
1938,
Page 82-87
J. D. Babbitt,
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PDF (345KB)
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摘要:
The thermal conductivity of samples of rock wool and fibreboard of various thicknesses (0.5 to 2.0 in.) was measured by means of a hot-plate apparatus. It was found that when surface effects were eliminated the conductivity obeyed Fourier's law.
ISSN:1923-4287
DOI:10.1139/cjr38a-009
出版商:NRC Research Press
年代:1938
数据来源: NRC
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