Publications

The characteristics of 3 basic electrostatic lens types were measured by the method previously described [Abstr. 1942B01261, 1943B00836]. The types tested were cyl.

T h e microphonic response uf different t y p e s of vacuum tulx*s to t h e s a m e mechanical a g i t a t i o n c o v e n a 70 db range of levels.

Various ways of determining the acoustic impedance and the absorption coefficient of porous materials from measurements on the standing waves in tubes are discussed.

The adaptation of a bridge circuit due to M.

HE successful transmission of broadband television and pulse signals over any communication circuit depends upon the preservation of the complex wave shapes of the original transmitted signals.

The measurement of power spectra is a problem of steadily increasing importance which appears to some to be primarily a problem in statistical estimation.

The measurement of power spectra is a problem of steadily increasing importance which appears to some to be primarily a problem in statistical estimation.

T HE theory of the general behavior of crystals in oscillator circuits has been described by I. E. Fair 1 .

The loss or transfer of metal due to the electrical erosion of contacts used in the telephone system results in reduced life, increased maintenance, or the use of more costly contact metals.

The ground-based communication antenna of the Telstar project must figuratively project a needle of energy toward a 3-foot satellite at a distance of several thousand miles and listen for a whisper