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Feb 1934

Volume 5, Issue 2, pp. 57-114

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Industrial Physics

Paul D. Foote

Rev. Sci. Instrum. 5, 57 (1934); http://dx.doi.org/10.1063/1.1751778 (10 pages) | Cited 2 times

Online Publication Date: 27 December 2004

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Abstract Unavailable

Transmutation by Alpha‐Particles

Karl K. Darrow

Rev. Sci. Instrum. 5, 66 (1934); http://dx.doi.org/10.1063/1.1751779 (12 pages) | Cited 3 times

Online Publication Date: 27 December 2004

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A Method of Producing Uniform Magnetic Fields

I. I. Rabi

Rev. Sci. Instrum. 5, 78 (1934); http://dx.doi.org/10.1063/1.1751780 (2 pages) | Cited 3 times

Online Publication Date: 27 December 2004

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Photoelastic Apparatus at the California Institute of Technology

J. H. A. Brahtz

Rev. Sci. Instrum. 5, 80 (1934); http://dx.doi.org/10.1063/1.1751781 (4 pages) | Cited 1 time

Online Publication Date: 27 December 2004

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A description is given of the reflector polariscope built at the California Institute of Technology. The preparation of models and the technique is explained. Examples of systems of isochromatics and isoclinic lines obtained in models of the Pine Canyon Dam, California, are reproduced.

A Modified Optical Arrangement for Photoelastic Measurements

Alexander Goetz

Rev. Sci. Instrum. 5, 84 (1934); http://dx.doi.org/10.1063/1.1751782 (1 page) | Cited 1 time

Online Publication Date: 27 December 2004

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A modification of the usual apparatus for photoelastic measurements is described in which the large convex lenses on both sides of the specimen are replaced by concave mirrors. The advantages lie in the absence of chromatic aberrations (isochromatic method) and inhomogeneities due to local anisotropies in the lenses; furthermore the price of the apparatus is cut to a fraction. The aberrations of the mirrors—astigmatism and coma—can be made negligible by the symmetrical arrangement of the optical paths and by proper choice of the optical ratio.

The Preparation of Sputtered Metal Films

E. O. Hulburt

Rev. Sci. Instrum. 5, 85 (1934); http://dx.doi.org/10.1063/1.1751791 (4 pages) | Cited 7 times

Online Publication Date: 27 December 2004

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The technique of sputtering is described. Opaque, optically good films were sputtered in a residual atmosphere of air from cathodes of Sb, Bi, Cd, Au, Pb, Pt, Ag, Sn and Zn in about an hour; from Co, Cu, Ir, Fe, Ni, Se and Te in two hours or so; and from Mo, Ta and W in several hours. Al, Be, C, Cr, Mg and Si sputter very slowly in air. In a residual atmosphere of Hg or He or A, opaque films of Al, Cr and Si were sputtered in a few hours. Evidence is presented which indicates that a majority of the sputtered particles are of molecular or atomic dimensions. The transmission of films of Pt, Ta and Cr was nearly constant for wave‐lengths from 0.5 to 2.2μ; films of Si and C were relatively transparent from 1.0 to 2.2μ.

On the Sharpness Testing of Safety Razor Blades

T. S. Fuller

Rev. Sci. Instrum. 5, 89 (1934); http://dx.doi.org/10.1063/1.1751804 (5 pages)

Online Publication Date: 27 December 2004

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The Measurement of Specific Resistance by Eddy Current Shielding

W. B. Kouwenhoven and G. P. Daiger

Rev. Sci. Instrum. 5, 94 (1934); http://dx.doi.org/10.1063/1.1751805 (8 pages) | Cited 8 times

Online Publication Date: 27 December 2004

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ABSTRACTS OF INSTRUMENTS LITERATURE

Rev. Sci. Instrum. 5, 102 (1934); http://dx.doi.org/10.1063/1.1751775 (5 pages)

Online Publication Date: 27 December 2004

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Interferential Prisms

George S. Monk

Rev. Sci. Instrum. 5, 106 (1934); http://dx.doi.org/10.1063/1.1751776 (1 page)

Online Publication Date: 27 December 2004

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PHYSICS NEWS

Rev. Sci. Instrum. 5, 110 (1934); http://dx.doi.org/10.1063/1.1751777 (5 pages)

Online Publication Date: 27 December 2004

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Abstract Unavailable
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