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The general approximate theory of x‐ray scattering at small angles by finely divided solids is reviewed. It is assumed that the x‐ray scattering data can be interpreted in terms of a particle size distribution, with particle‐to‐particle scattering negligible. Scattered intensity curves...
Knowledge of the radar response of wires or thin metallic strips, as a function of their length and thickness, and of the radar frequency is important in the design of reflectors for radar. In view of the difficulty of this theoretical problem and the necessity of making approximations, as well...
Breakdown studies have been made between electrodes in high vacuum at constant voltages from 50 to 700 kv. These further demonstrate the inadequacy of the field emission theory to account generally for high voltage breakdown in vacuum. Experiments are described which investigate some of the...
The theory of the scattering of x‐rays at small angles is given for a continuous distribution in size of randomly spaced and oriented spheroidal particles having arbitrary, but fixed, shape. Families of scattering curves are presented for spheres, and for spheroids ranging in shape from flat...
The magnetron oscillator of some frequency‐modulation radars also furnishes the ``local oscillator'' excitation for the crystal mixer of the receiver. Excess noise generation by the magnetron was observed to reduce greatly the receiver sensitivity. This noise exhibited a strong dependence upon...
A new form of Fourier series for crystal structure analysis is developed and a graphical method of summation described. The procedure is designed to permit simple and fairly rapid computation and recording of the density contributions of all planes at all points in the unit cell. Its particular...
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