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K. W. Wagner's treatment of the distribution of relaxation times in dielectrics is reviewed; the effect of the density of distribution upon the frequency variation of the dielectric constant and dielectric loss factor is discussed; and a graphical method of evaluating the constants of Wagner's...
The thermal sensitivity of skin to radiation has been studied with a new technique and the temperature changes in the skin surface have been accurately measured. The change in skin response of both whites and negroes to visible, infrared radiation, and sunlight has been measured. Results show...
Simple expressions for the field as a function of direction at distances of many wave‐lengths from any antenna above a plane earth are obtained. Except near the surface of the earth the field varies as 1/ r. In agreement with results of others it is found that on the surface of the earth for...
(1). Introduction: Description of fixed‐focus and variable‐focus electrostatic image tube; scope of paper. (2). Focusing properties: Measurement of the variation of image distances and magnification with object distance and ratio of applied voltages for both types of tubes; calculation of...
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