Temperatures in the Early Universe. Access the Active Integrated Media Module “Black Body Curves” in the Discovering the Universe Web site. a. Use the module to determine by trial-and-error the...

Temperatures in the Early Universe. Access the Active Integrated Media Module “Black Body Curves” in the Discovering the Universe Web site. a. Use the module to determine by trial-and-error the temperature at which a blackbody spectrum has its peak at a wavelength of 1
m. b. At the time when the temperature of the cosmic background radiation was equal to the value you found in (a), was the universe matter-dominated or radiation-dominated? Explain your answer. Hint: Figure 18-8 might help.