Results 261 to 270 of about 24,613 (311)
Some of the next articles are maybe not open access.
The quadrant electrometer for the measurement of dielectric loss
Journal of the A.I.E.E., 1924Walker, Skinner, Addenbrooke, Rayner, Orlich, Schultze, Thielers and others* have given a great amount of useful information on electrometers for the measurement of dielectric loss. We have found instruments made somewhat after the design of Skinner and Rayner, so rugged, and so useful as laboratory instruments, even when the instrument is subjected to
D. M. Simons, W. S. Brown
openaire +1 more source
Dielectric Loss Mechanism in Rutile (TiO2)
Journal of Applied Physics, 1972A new mechanism to account for the anomalously large dielectric loss and apparent dielectric constant frequently observed in TiO2 is presented, which appears to agree well with experiment. The mechanism involves field-induced donor migration where the field arises from a difference in work function between the rutile and a metal electrode.
Johnson, O. W. +2 more
openaire +3 more sources
Journal of Materials Science, 1999
Low-loss dielectrics are important technologically as insulators but there is little understanding of the physical causes of this property and even their spectral response is not well documented—this study has revealed a number of different types of behaviour which do not appear to have been recognised previously. Most low-loss materials show a “flat”,
openaire +1 more source
Low-loss dielectrics are important technologically as insulators but there is little understanding of the physical causes of this property and even their spectral response is not well documented—this study has revealed a number of different types of behaviour which do not appear to have been recognised previously. Most low-loss materials show a “flat”,
openaire +1 more source
Calorimetric measurement of dielectric losses in solids
Electrical Engineering, 1936A new transient calorimetric method for measurement of dielectric losses in solids at 10,000 volts and 1,000 kilocycles, is described in this paper and experimental data obtained by this method are presented. A steady-state method also is described and a direct comparison between the results obtained by the 2 methods is given.
H. H. Race, S. C. Leonard
openaire +1 more source
Loss Mechanisms in Dielectric-Loaded Resonators
IEEE Transactions on Microwave Theory and Techniques, 1985Analysis is presented of resonators consisting of a section of a dielectric-loaded waveguide shorted at both ends. The analysis includes resonant frequency calculations, mode charts, and unloaded Q computations. Numerical results are presented for the unloaded Q's of various modes, as a function of the resonator parameters.
K.A. Zaki, C. Chen
openaire +1 more source
1983
Efficient utilization of electrical insulating materials in electrical apparatus, devices, and cables requires knowledge of the dielectric loss behavior of materials under specific voltage, frequency, and temperature conditions. The appearance of significant dielectric losses may not only represent an unnecessary energy loss but could possibly lead to ...
openaire +1 more source
Efficient utilization of electrical insulating materials in electrical apparatus, devices, and cables requires knowledge of the dielectric loss behavior of materials under specific voltage, frequency, and temperature conditions. The appearance of significant dielectric losses may not only represent an unnecessary energy loss but could possibly lead to ...
openaire +1 more source
Dielectric Polarization and Loss
Annual Review of Physical Chemistry, 1960The subject of dielectric behavior has not previously been dealt with as such in these reviews, although dielectric properties relevant to other sub jects have often been mentioned. There have, however, been a number of comparatively recent books and review articles on various aspects of di electrics.
openaire +1 more source
1967
In alternating electric fields, a dielectric material is frequently characterized by its dielectric loss, which depends on the fraction of electrical energy lost to heat, rather than by its electrical conductivity. The energy loss occurs as the result of two processes: conduction and slow polarization currents.
openaire +1 more source
In alternating electric fields, a dielectric material is frequently characterized by its dielectric loss, which depends on the fraction of electrical energy lost to heat, rather than by its electrical conductivity. The energy loss occurs as the result of two processes: conduction and slow polarization currents.
openaire +1 more source
Losses at corner bends in dielectric waveguides
Applied Optics, 1977An approximate technique based on a sum rule is used to treat mode conversion at corner bends in dielectric waveguides. Matrix elements which describe the mode coupling are expressed as spatial integrals over electromagnetic field distributions for the guided modes.
openaire +2 more sources
Dielectric absorption and dielectric loss
Journal of the Franklin Institute, 1929openaire +1 more source