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The surface area of the tungsten filament 25 watt vacuum tube is 0.403 cm ^ 2, and its filament temperature 2177 ° C. How many times less energy emits light than a black body of the same surface at the same temperature? Considers that, in a balance, all the heat released in the thread is lost by radiation.
Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.
If you have any questions to address, please. I'll try to help.
If you have any questions to address, please. I'll try to help.
