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A resonant cavity method is described for the determination of the dielectric constant of polymeric solids in the form of fibers, films, and thin cylinders. Methods for investigating electrical anisotropy are outlined. In the case of fibers, for the electric field parallel to the fiber axis, the...
The allotropy of beryllium has been confirmed by employing different alloying properties of allotropic forms of metallic elements. Alloys of beryllium and gold, studied by x‐ray diffraction methods, showed that the limit of solubility of gold in beryllium is between two and three atomic...
A mathematical analysis is presented which is believed to be applicable to a general class of storage tubes where signal storage is accomplished by depositing through secondary emission a charge pattern on a dielectric surface. The assumptions made to linearize and simplify the problem are...
The correlation of experimental data and the proper description of the state and history of deformation of work‐hardening materials has received much attention. An often desired objective is the plotting of a variable involving stress alone, a so‐called effective stress , against a variable...
The field of a quarter‐wave‐length antenna above a circular conducting disk of zero thickness—the groundplane—is calculated theoretically by use of the wave functions of the oblate spheroid. Assuming a sinusoidal distribution of current on the antenna, we compute the currents on the...
A hot‐cathode arc in cesium vapor has been studied by the use of a plane Langmuir probe to investigate the potential distribution, electron temperature and electron density in the plasma. The range of arc currents and vapor pressures over which satisfactory probe measurements may be made are...
An experimental study was made of the orienting effects of silver on sodium chloride crystallized from solution. Pronounced epitaxy was observed in the following cases: (1) On oriented films of silver with (100) and also with (111) planes parallel to the surface; and (2) on polycrystalline high...
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