A super-insulated house is at a temperature of 20°C. The temperature outside is 0°C. The surface area of the house is 200 m², and the emissivity is 1. Approximately how much energy is radiated (in W) per second? a. 20 000 b. 20 000 с. 200 d. 2.

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Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.