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Dec 1942

Volume 13, Issue 12, pp. 511-543


A New Occupational Deferment Procedure for Physicists

Rev. Sci. Instrum. 13, 511 (1942); http://dx.doi.org/10.1063/1.1769958 (2 pages)

Online Publication Date: 27 December 2004

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A Monochromator Using a Large Water Prism

C. V. Cannon and O. K. Rice

Rev. Sci. Instrum. 13, 513 (1942); http://dx.doi.org/10.1063/1.1769959 (2 pages) | Cited 4 times

Online Publication Date: 27 December 2004

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An inexpensive monochromator, capable of giving high intensity in the near ultraviolet, is described. Its distinguishing feature is a large water prism with quartz sides. This prism has an internal reflection so that the beam always comes through it at minimum deviation, and gives straight undistorted spectral lines at the exit slit.

The Infra‐Red Prism Spectrograph as a Precision Instrument

R. A. Oetjen, Chao‐Lan Kao, and H. M. Randall

Rev. Sci. Instrum. 13, 515 (1942); http://dx.doi.org/10.1063/1.1769960 (9 pages) | Cited 16 times

Online Publication Date: 27 December 2004

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An investigation of the working conditions of an infra‐red spectrometer of the recording type has resulted in techniques of operation which have increased the precision of the measurements attainable and has permitted an appraisal of the magnitudes of the variations in the resulting data which may still be expected. Included in this study is the remeasurement of the fine structure of certain of the absorption bands of CO2, NH3, and H2O. Measured with a grating instrument whose resolution was made to equal that of the prism instrument in each case, these data give 150 sharp absorption lines between 5μ and 15μ suitable for an empirical calibration of great accuracy.
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Microelectrodes for Measuring Local Oxygen Tension in Animal Tissues

Philip W. Davies and Frank Brink

Rev. Sci. Instrum. 13, 524 (1942); http://dx.doi.org/10.1063/1.1769961 (10 pages) | Cited 101 times

Online Publication Date: 27 December 2004

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A description is given of two types of stationary platinum microelectrodes which electrolyze dissolved oxygen when suitable potentials are applied. With these electrodes it is possible to measure the oxygen tension in an open solution, and especially, to estimate local oxygen tensions in animal tissues. Electrodes have been constructed which can indicate oxygen tension as a function of position with a spatial resolution of 25 microns. One type of electrode, with the end of the platinum wire recessed inside the cylindrical glass tip, can be used to measure absolute oxygen tensions as often as once every five minutes. The other, an open type, with the end of the wire directly exposed to the outer medium, allows the estimation of relative oxygen tensions only, but gives continuous readings, and is useful for recording rapid changes of tension.
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A Method of Preparing Strips with Uniformly Varying Blackening

E. S. Barr and L. B. Scott

Rev. Sci. Instrum. 13, 533 (1942); http://dx.doi.org/10.1063/1.1769962 (2 pages)

Online Publication Date: 27 December 2004

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Abstract Unavailable

Use of a Double Triode as a Pulse‐Lengthener

C. W. Sheppard

Rev. Sci. Instrum. 13, 534 (1942); http://dx.doi.org/10.1063/1.1769963 (1 page) | Cited 1 time

Online Publication Date: 27 December 2004

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Tire Valve in Vacuum Application

C. H. Bachman and I. B. Bensin

Rev. Sci. Instrum. 13, 534 (1942); http://dx.doi.org/10.1063/1.1769964 (2 pages)

Online Publication Date: 27 December 2004

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Abstract Unavailable
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Contributed Points of View

G. P. H.

Rev. Sci. Instrum. 13, 535 (1942); http://dx.doi.org/10.1063/1.1769965 (4 pages) | Cited 1 time

Online Publication Date: 27 December 2004

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Abstract Unavailable
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New Instruments

Wm. F. Roeser

Rev. Sci. Instrum. 13, 539 (1942); http://dx.doi.org/10.1063/1.1769966 (2 pages)

Online Publication Date: 27 December 2004

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New Materials

Wm. F. Roeser

Rev. Sci. Instrum. 13, 541 (1942); http://dx.doi.org/10.1063/1.1769967 (1 page)

Online Publication Date: 27 December 2004

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Regulations and Releases

George H. Burnham

Rev. Sci. Instrum. 13, 541 (1942); http://dx.doi.org/10.1063/1.1769968 (3 pages)

Online Publication Date: 27 December 2004

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