منابع مشابه
Universal thermal radiation drag on neutral objects.
We compute the force on a small neutral polarizable object moving at velocity v--> relative to a photon gas equilibrated at a temperature T. We find a drag force linear in v-->. Its physical basis is related to that in recent formulations of the dissipative component of the Casimir force, i.e., the change in photon momentum in emission and absorption between the moving body and the stationary t...
متن کاملThermal Radiation Drag on Neutral Objects
We compute the force on a small neutral polarizable object moving at velocity ~v relative to a photon gas equilibrated at a temperature T We find a drag force linear in ~v. Its physical basis is identical to that in recent formulations of the dissipative component of the Casimir force. We estimate the strength of this universal Casimir drag force for different dielectric response functions and ...
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We discuss the different physical processes that are important to understand the thermal X-ray emission and absorption spectra of the diffuse gas in clusters of galaxies and the warm-hot intergalactic medium. The ionisation balance, line and continuum emission and absorption properties are reviewed and several practical examples are given that illustrate the most important diagnostic features i...
متن کاملThermal radiation in photonic crystals
We analyze the properties of thermal radiation in photonic crystals and show that the spectral energy density, the spectral intensity, and the spectral hemispherical power are only limited by the total number of available photonic states and their propagation characteristics. In addition, we show that the central quantity that determines these thermal radiation characteristics is the area of th...
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This work seeks to improve understanding of atmospheres in radiative-convective equilibrium. We use two types of idealized, dry radiative-convective models. The first type of model resembles Rayleigh-Benard convection, except that thermal radiative transfer is included. This type of system can be investigated in the laboratory. The second type of model is a more faithful representation of the e...
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ژورنال
عنوان ژورنال: Časopis pro pěstování matematiky a fysiky
سال: 1905
ISSN: 1802-114X
DOI: 10.21136/cpmf.1905.122191