Sampad Saha
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I know Density of energy is the amount of energy of photons per unit volume, but what do you mean by giving the range of frequency between f to f + df ?
The discussion clarifies that the "Density of radiation between f to f + df" refers to the energy density of photons within a specific frequency range. This concept indicates that energy density is not a constant but varies as a function of frequency. The term "df" represents an infinitesimal change in frequency, emphasizing the continuous nature of energy distribution across frequencies.
PREREQUISITESPhysicists, students studying electromagnetic theory, and anyone interested in the properties of radiation and energy distribution in various frequency ranges.