Question

write stefen's law regarding black body radiation

Answer 1

Answer:

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Explanation:

Principle: A black body is an ideal body which absorbs or emits all types of electromagnetic radiation. ... Where R = energy radiated per area per time, Є = emissivity of the material of the body, σ = Stefan's constant = 5.67x10-8 Wm-2K-4, and T is the temperature in Kelvin scale.

Answer 2

Answer:

According to Stefan Boltzmann law, the amount of radiation emitted per unit time from an area A of a black body at absolute temperature T is directly proportional to the fourth power of the temperature.

u = sAT4

where s is Stefan’s constant = 5.67 × 10-8 W/m2 k4

Explanation:

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