Thermal Radiation %n AhsohUe Measure. 



281 



Fig. 6. — Emission of heat from three bright platinum wires, Pt^, Ptg, Pt5, of 

 different diameters as indicated. 



/OO J50 £00 260 500 350 'MO 450 500 550 600 650 700 750 600 

 TempemCure in decrees Centi^mde. 



