a black body at high temperatures T K radiates at the rate of E W/m^2 when the temperature falls to T/2 k, the radiated energy will be
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According to Stefan Boltzmann law the radiated energy per unit time (power) across all wavelengths from a black body at a temperature T °K is given by
J = σ T⁴
where σ = Stefan Boltzmann's constant = 5.67 * 10⁻⁸ Wb /m²/K⁻⁴
Given J = E = σ T⁴
When T becomes T/2 °K, then J = σ T⁴/2⁴ = E/16
So the radiated power (energy/time) will become 1/16 th of E.
J = σ T⁴
where σ = Stefan Boltzmann's constant = 5.67 * 10⁻⁸ Wb /m²/K⁻⁴
Given J = E = σ T⁴
When T becomes T/2 °K, then J = σ T⁴/2⁴ = E/16
So the radiated power (energy/time) will become 1/16 th of E.
kvnmurty:
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the radiation power become 1/16 of its original value
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