The radiant energy density (ρν) for the blackbody radiation is given by (see image below) where ρν dν is the energy per unit volume in the frequency range between ν and ν + dν. a) To exemplify and using ν = 3.5 x 1014 s-1, calculate density (concentration) spectral radiant excitation (in J m-2) as a function of frequency for the blackbody, a T=5776 K (the temperature of the sun). b)Plot the graph of spectral density versus frequency.

The radiant energy density (ρν) for the blackbody radiation is given by (see image below) where ρν dν is the energy per unit volume in the frequency range between ν and ν + dν. a) To exemplify and using ν = 3.5 x 1014 s-1, calculate density (concentration) spectral radiant excitation (in J m-2) as a function of frequency for the blackbody, a T=5776 K (the temperature of the sun). b)Plot the graph of spectral density versus frequency.

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