Useful for qualitative activities in thermal radiation. The results can also be quantified using a suitable radiation sensor facilitating investigation of emission and absorption of radiation from different surfaces at a same temperature or radiation from a single surface at different temperatures (Stefan-Boltzman’s Law). Each 100mm side of the copper cube has a different surface: dull black, bright black, white and copper. The top opening is 15mm diameter and is fitted with a lid. The apparatus is filled with water maintained at boiling point by a low bunsen flame. Infra red sensors may be used to compare the relative radiant heat output from each of the four faces.
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