Blackbody Radiation Part 1 - Experimental Observations: Stefan Law, Wiens Displacement Law
Channel: For the Love of Physics
Date: 2023-03-16

Blackbody radiation refers to the electromagnetic radiation emitted by an object at a given temperature. A blackbody is an idealized object that absorbs all radiation that falls on it and emits radiation at all wavelengths.

Stefan's law, states that the total amount of radiation emitted by a blackbody per unit time and unit surface area is proportional to the fourth power of its absolute temperature. 

Wien's displacement law, relates the wavelength at which the spectral radiance of a blackbody is at a maximum to its temperature. Specifically, the product of the wavelength of maximum emission and the temperature of the blackbody is a constant: λ_maxT = b, where b is a proportionality constant.

In this video I discuss all the above, as well as various experimental observations.

00:00 Introduction
11:39 Experimental Observations
13:56 Stefan Boltzman Law
17:09 Wien's Displacement Law
20:42 Conclusions

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