Results 261 to 270 of about 3,315 (302)

Dielectric Polarisation of Phenol

Nature, 1935
IT is well known that the molecular polarisation of alcohols in a non-polar medium is exceptional in that it at first increases with concentration and then falls finally to a lower value than that at which it started. The data of Williams and Allgeier1 show that at 25° up to a molar fraction of 0.345 the polarisation of phenol in benzene is constant ...
openaire   +1 more source

Polarisation phenomena in dielectrics: a comment

Journal of Physics D: Applied Physics, 1979
Discusses the behaviour of decay voltage and recovery voltage curves of capacitors under isothermal and nonisothermal conditions.
openaire   +1 more source

Influence of polarisation on breakdownstrength of polymeric composite dielectrics

IEE Proceedings - Science, Measurement and Technology, 2001
The results of a study of electrical characteristics such as permittivity /spl epsiv/, loss factor tan/spl delta/ and breakdown strength E/sub b/ of new composite materials on the basis of polyvinylchloride filled with ferroelectric ceramic powder PZT are presented.
O.S. Gefle, S.M. Lebedev, Y.P. Pokholkov, D.P. Agoris, I. Vitellas   +4 more
openaire   +1 more source

Fluctuations of partial polarisations in dielectrics

Journal of Physics C: Solid State Physics, 1979
A theory of fluctuations of partial polarisations in dielectrics is formulated on the basis of macroscopic phenomenological equations and thermodynamic fluctuation theory. The distinction between the high-frequency polarisability of molecules and the low-frequency dielectric behaviour of their permanent dipoles gives rise to the selection of local and ...
openaire   +1 more source

Polarisation-dependent Attenuation Of Dielectric Cylinder Arrays

International Geoscience and Remote Sensing Symposium, 'Remote Sensing: Moving Toward the 21st Century'., 2005
Inventory of land use by remote sensing is in many cases associated with electromagnetic waves, originating from spacecraft or airplane, on dielectric cylinder arrays. In models or laboratory measurement many natural targets like cereals or coniferous trees may be represented by lossy dielectric cylinders Ill. Depending on the polarization the incident
W. Wiesbeck, D.I. Gihny, S. Riegger
openaire   +1 more source

Reflection at a dielectric in terms of polarisation

Journal of Physics C: Solid State Physics, 1979
The origin of the paradox that the time-dependent properties of a dielectric cannot be obtained from time domain spectroscopy without conversion to the frequency domain is discussed in terms of the calculation of reflection in terms of polarisation.
openaire   +1 more source

Hopping losses in polarisable dielectric media

Nature, 1974
The loss in most dielectric materials shows a component that is ‘flat’ in frequency over several decades and does not depend strongly on temperature. The usual interpretation as the sum of many Debye-like loss peaks is criticised and a new model is proposed in which charge carriers hop between localised sites in a polarisable medium.
openaire   +1 more source

Change of Dielectric Polarisation of Carbon Disulphide with Temperature

Nature, 1931
ONE of us (J. M.) has determined the changes of density D and dielectric constant E of carbon disulphide with temperature.
M. WOLFKE, J. MAZUR
openaire   +1 more source

A variable polarisation compensator using artificial dielectrics

Optics Communications, 1999
Abstract Artificial dielectrics can be made to exhibit strong birefringence. This property may be used to construct waveplates for a variety of applications. In this article, a method for making a variable artificial dielectric retarder, akin to a Babinet–Soleil compensator, is investigated.
David R.S. Cumming, Richard J. Blaikie
openaire   +1 more source

Dielectric Relaxation Study from Polarisability Data

Physics and Chemistry of Liquids, 1989
Abstract An analysis of the dielectric data using the polarisability plots have been carried out in our earlier paper [Current Sci. India 15 (1982) 695]. The polarisability equations proposed in our earlier paper have been modified by introducing a correction term.
J. P. Shukla, Rajni Misra, Amar Singh, Manisha Gupta, M. C. Saxena   +4 more
openaire   +1 more source