Results 251 to 260 of about 2,008,385 (296)

Thermal Characterization of Low Thermal Diffusivity Glasses

1992
The photodeflection technique is a very effective method to measure thermal properties of solid materials. Depending on the material, the technique can be used in its collinear (probe through the transparent sample) or transverse configuration (probe traveling in the air: opaque sample).
BERTOLOTTI, Mario, LI VOTI, Roberto, LEAHU, GRIGORE, SIBILIA, Concetta, A. Montenero, G. Gnappi   +5 more
openaire   +3 more sources

The FJO thermal diffusion column theory and the thermal diffusion factor

Journal of Physics A: General Physics, 1971
It is shown that by proper choice of a reference temperature in the theoretical expression for the separation factor for a thermal diffusion column, the separation factor may be made to depend on the potential model and the interaction parameters solely through the thermal diffusion factor, the other terms in the expression becoming independent of the ...
J M Saviron, M A Hidalgo, J C Yarza, D Gonzalez-Alvarez   +3 more
openaire   +1 more source

Mass and Thermal Diffusivity Algorithms

Annals of the New York Academy of Sciences, 2002
Abstract: Mass and thermal diffusivity measurements conducted on Earth are prone to contamination by uncontrollable convective contributions to the overall transport. Previous studies of mass and thermal diffusivities conducted on spacecraft have demonstration the gain in precision, and lower absolute values, resulting from the reduced convective ...
R Michael, Banish, Lyle B J, Albert, Timothee L, Pourpoint, J Iwan D, Alexander, Robert F, Sekerka   +4 more
openaire   +2 more sources

Thermal Conductivity and Thermal Diffusivity

1983
Abstract This chapter presents basic principles and the theoretical results of heat transport in solids. Thermal conductivity and thermal diffusivity are the principal properties discussed. Discussions are also included on the effects of temperature, magnetic field, and metallurgical variations caused by composition, processing, and heat-
openaire   +1 more source

Pseudo-Landau Thermal Diffusion

Physical Review Letters
Landau quantization of two-dimensional free electrons and massless Dirac fermions plays a key role underlying many quantum phenomena in condensed matter physics. It usually requires the magnetic field, which arranges the charge carriers associated with the harmonic oscillation on a ladder of discrete Landau levels with a dissipationless edge state ...
Jun Guo, Guoqiang Xu, Mengqi Liu, Xue Zhou, Guangming Tao, Cheng-Wei Qiu   +5 more
openaire   +2 more sources

"Thermal diffusion"

Tidligere referanse: 8 ...
openaire   +1 more source

Thermodynamics of Thermal Diffusion: Thermal Diffusion in Liquids and Thermal Diffusion in Gasses

1988
Jeong-long Lin, William Taylor
openaire   +1 more source

Diffusion and Thermal Diffusion of Isotopic Gases

The Journal of Chemical Physics, 1953
The thermal diffusion ratio, RT, for argon and neon isotopes is known to be a linear function of lnT over a considerable temperature range. It is shown that d lnD/d lnT must also be approximately linear in lnT, and that the diffusion coefficient, D, should therefore obey an empirical equation of the form D=αT(β+γlnT),where α, β, γ are constants ...
openaire   +1 more source

Thermal diffusivity of

Proceedings of the 10th international conference on photoacoustic and photothermal phenomena, 1999
D. M. Todorovic, D. Vasiljevic-Radovic, A. I. Bojicic, V. B. Pavlovic, B. D. Stojanovic, M. M. Ristic   +5 more
openaire   +1 more source

Development of quartz glass as a certified reference material for thermal diffusivity measurements

International Journal of Thermal Sciences, 2021
Mu Li, Naofumi Yamada, Megumi Akoshima
exaly