Tin plate box with 130 mm sides. The vertical faces of the box areblackened, roughened, varnished and polished respectively. The top openin is fitted with a stopper. The apparatusis filled with water maintained at boiling point by a low bunsen flame Infrred sensors may be used to compare the relative radiant heatoutput from each of the four faces.
Tin plate box with 130 mm sides. The vertical faces of the box areblackened, roughened, varnished and polished respectively. The top openin is fitted with a stopper. The apparatusis filled with water maintained at boiling point by a low bunsen flame Infrred sensors may be used to compare the relative radiant heatoutput from each of the four faces.
