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Author: Walton B. Bishop Publisher: ISBN: Category : Electric batteries Languages : en Pages : 18
Book Description
A very simple analysis of circuit reliability when the source of energy of 'power supply' is included shows that small independent sources of energy are needed. Several possible ways of satisfying this intuitively obvious need are discussed. (Author).
Author: Walton B. Bishop Publisher: ISBN: Category : Electric batteries Languages : en Pages : 18
Book Description
A very simple analysis of circuit reliability when the source of energy of 'power supply' is included shows that small independent sources of energy are needed. Several possible ways of satisfying this intuitively obvious need are discussed. (Author).
Author: Carl T. Case Publisher: ISBN: Category : Dielectrics Languages : en Pages : 22
Book Description
A system of fixed-rotating vectors can be used to study the impedance loci of functions of the first Foster form and of systems including negative impedance converters. Of particular interest in the field of dielectrics and biological membrane studies is a parallel RC network, where the dielectric of the capacitor is given by the Debye dispersion relations. Such a network also falls into the category of the first Foster form.
Author: Air Force Cambridge Research Laboratories (U.S.) Publisher: ISBN: Category : Aeronautics Languages : en Pages : 322
Book Description
Summaries are given of research in the following fields: upper atmosphere physics, microwave physics, space physics, terrestrial sciences, optical physics, data sciences, meteorology, solid state, aerospace instrumentation.
Author: E. A. Lewis Publisher: ISBN: Category : Atmospheric electricity Languages : en Pages : 50
Book Description
Very narrow-band quenched filters used for studying VLF radio signals differ from conventional narrow-band circuits in that both signal and atmospheric noise impulses cause only brief quasi-sinusoidal outputs instead of a prolonged ringing. The random overlapping of these short noise and signal bursts can cause errors in phase measurements. It is shown that the distribution of phase errors can be calculated from the amplitude distribution of the output noise envelope. The properties of the phase distribution are discussed in detail, the computation required in the general case is illustrated by means of a numerical example. A simple 'time-sequential' method for experimentally obtaining typical amplitude distributions is suggested. (Author).
Author: C. C. Leiby (Jr.) Publisher: ISBN: Category : Electrophoresis Languages : en Pages : 42
Book Description
Druyvesteyn's solutions for electrophoretically induced gas flows in electrical discharges in gases were extended over a larger pressure range and corrected for the influence of Debye shielding effects. The effects of molecular or 'slip' flow were also taken into account. These more accurate and general solutions were applied to the reverse phenomenon of space charge field generation arising from the flow of a thermally ionized cesium plasma through a tube. Under such flow conditions, a non-linear differential equation for the axial pressure distribution was obtained but not solved. However, it was possible to obtain estimates of the ranges of cesium pressure, temperature and tube radii which would be required for sensible levels of electric power generation. Anaphoretic flow power levels of the order of 0.1 to 10 watts, in tubes of laboratory dimensions (radii of 10 cm or less), appear feasible at temperatures from 1700 to 2400K. Sensible power generation levels at lower temperatures require very large diameter tubes, and therefore are not feasible. (Author).
Author: J. F. McIlvenna Publisher: ISBN: Category : Aerial photography Languages : en Pages : 66
Book Description
The mapping of extended, cultural ground targets by an airborne radar is examined using communication theory concepts including those of the antenna transfer function and the target spatial frequency spectrum. Use of the set of transfer functions that correspond to Taylor aperture distributions and specification of the targets directly in terms of their spatial frequency spectra, permits one to examine the antenna images for quality and resolution. The results obtained indicate that resolution for a class of ground targets can be much better than is predicted by the two-point Rayleigh resolution criterion. It is also true that there can be situations in which the shape of the antenna images are quite independent of the radiation pattern. Several types of spatial noise were also included in the input spectrum to investigate noise effects on image quality and resolution. (Author).
Author: E. A. Burke Publisher: ISBN: Category : Cobalt Languages : en Pages : 26
Book Description
Aqueous solutions of ferrous ammonium sulfate with cupric chloride were studied as a means for determining the uniformity of the dose rate around a multikilocurie cylindrical array of cobalt-60. Ferric ion was measured spectrophotometrically at 305 millimicrons. The solution selected to satisfy the requirements for dosimetry contained 0.0005 M ferrous ammonium sulfate and 0.005 M cupric chloride in 0.001 N sulfuric acid. Spectrophotometric measurements of ferric ion were made in solutions brought to 0.15 N acid concentration, instead of the conventional 0.8 N, in order to minimize spurious oxidation. The molar extinction coefficient at this normality proved to be the same as that in 0.8 N solutions. The G value, as compared to the standard ferrous-ferric dosimeter, was 0.65. Using these solutions, no detectable variation in dose rate was found at symmetrically equivalent positions at the center of the cobalt-60 source. The average dose rate at each end of the cylindrical array proved to be 12 percent lower than that at the center. The dose rate was also less uniform at the ends, varying by = 4 percent from point-to-point. At a distance of fifteen inches from the center of the source array, the dose rate decreased as the square of the distance. (Author).
Author: Walton B. Bishop
Author: Walton B. Bishop
Author: 
Author: 
Author: Carl T. Case
Author: 
Author: Air Force Cambridge Research Laboratories (U.S.)
Author: E. A. Lewis
Author: C. C. Leiby (Jr.)
Author: J. F. McIlvenna
Author: E. A. Burke