Acta Metrologica Sinica  2014, Vol. 35 Issue (1): 10-12    DOI: 10.3969/j.issn.1000-1158.2014.01.03
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Effect on Environment Radiation in Measurements for Spectral Emissivity at Medium and Low Temperatures
LI Xi-ming，LI Wen-jun，GU Zhe-han，ZHOU En，ZHANG Long-fei
China Jiliang University， Hangzhou， Zhejiang 310018， China
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Abstract  Both effective spectral emissivity and radiance temperature are discussed The measuring methods and apparatus of spectral emissivity are introducedThe calculation equation for spectral emissivity is given, which has a concern with the environment radiation.  It indicates that the effect of environment radiation should be taken into account on the measurements for spectral emissivity at medium and low temperatures,otherwise a significant measuring error will be introduced.
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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2014.01.03     OR     http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2014/V35/I1/10
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