Transcription of Radiation Exchange Between Surfaces
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Radiation Exchange Between Surfaces
Chapter 1 Radiation Exchange Between Motivation and ObjectivesThermal Radiation , as you know, constitutes one of the threebasic modes (or mechanisms) of heattransfer, , conduction, convection, and Radiation . Actually, on a physical basis, there are onlytwo mechanisms of heat transfer; diffusion (the transfer of heat via molecular interactions) andradiation (the transfer of heat via photons/electomagnetic waves). Convection, being the bulktransport of a fluid, is not precisely aheattransfer physics of Radiation transport are distinctly differentthan diffusion transport.
3. the inverse square of the distance between the source and the target, 1/R2. The last proportionality comes from the fact that the area of the hemisphere scales as R2, and the total power falling on the hemisphere – which would equal the total power emitted by the source – would be constant in the absence of a participating medium.
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