• Comparison between the absorption power of a disc with two polished faces and that of a disc with a polished face and a blackened face;
• Comparison between the absorption power of a disc with two polished faces and that of a disc with two blackened faces;
• Comparison between the absorption power of a disc with two blackened faces and that of a disc with a polished face and a blackened face;
• Verification of the irradiation Law as a function of distance.
1 Platform with two adjustable supports
1 Aluminium disc with two polished faces
1 Aluminium disc with two blackened faces
1 Aluminium disc with a polished face and a blackened one
1 Lamp 100 W