Question
Explain spectral distribution of blackbody radiation.
✓
Answer
Blackbody radiation is the electromagnetic radiation emitted by a blackbody by virtue of its temperature. It extends over the whole range of wavelengths of electromagnetic waves. The distribution of energy over this entire range as a function of wavelength or frequency is known as the spectral distribution of blackbody radiation or blackbody radiation spectrum.If $R_\lambda$ is the emissive power of a blackbody in the wavelength range $\lambda$ and $\lambda+d \lambda$, the energy it emits per unit area per unit time in this wavelength range depends on its absolute temperature $T$, the wavelength $\lambda$ and the size of the interval $d \lambda$.
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