The Sun is approximately an ideal blackbody radiator with a surface temperature of 5800 K.
(a) Find the wavelength at which its spectral radiancy is maximum.
(b) Identify the type of electromagnetic wave corresponding to that wavelength.
(c) As we shall discuss in Chapter 44, the universe is approximately an ideal blackbody radiator with radiation emitted when atoms first formed. Today the spectral radiancy of that radiation peaks at a wavelength of 1.06 mm (in the microwave region).What is the corresponding temperature of the universe?