Wavelength of Radiation Peak
Apply the
Wien Law
to answer the following questions:
-
The Universe is pervaded by a background radiation that has the characteristics
of a blackbody radiating at a temperature of 3 K (rounded to the nearest
integer). What is the wavelength for the peak intensity and in what region of
the electromagnetic spectrum does it come?
-
The Sun has a surface temperature of about 5800 K. At what wavelength of the
visible spectrum does the peak radiation output come if the Sun is a blackbody
radiator? What color is the light at the peak?
The Solution