الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
The major responsibility of NIS-Egypt entails physically realizing, maintaining, and developing the International System(SI) of units under controlled conditions. Those units and their derived units are disseminated to industry calibration services. Nowadays usage of wideband radiation thermometer become more common especially in food industries and medical applications. Hence providing traceable measurements for calibrating Radiation Thermometers )RTs) is necessary, and this can be performed by using blackbody calibration sources.