How to show experimentally the transfer of energy by radiation?

To experimentally show the transfer of energy by radiation, you need to use a thermoscope, to the dark surface of which a heated piece of metal is vertically brought. The lowering of the liquid in the knee of the manometer connected to the heat receiver is explained by the fact that the air in the heat receiver has heated up and expanded due to the transfer of energy from the heated piece to it by radiation.



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