Spectral blue shift of thermal radiators

Details Spectral blue shift of thermal radiators Spectral blue shift of thermal radiators

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3505..118w&link_type=abstract

Proc. SPIE Vol. 3505, p. 118-123, Imaging System Technology for Remote Sensing, Mingzhi Wei; Xinjian Yi; Jianzhong Han; Fiodor F

Physics

Scientific paper

The traditional concept of graybody in IR application is investigated and new viewpoints are proposed. It is found that the spectral distribution of thermal radiation of a real body with emissivity (epsilon) < 1, compared with that of absolute blackbody, will shift to shortwave region, i.e. the blue shift phenomena will appear. This conclusion is obtained from studies on, first, the analyses and research of radiation characteristic of snow in visible and IR regions, second, the physical and mathematical analyses of thermal radiation of pure metals, and finally, the concept study of radiation temperature, luminance temperature and color temperature. Some reviews and suggestions are given to related problems in RI technology.

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