Calculus Based Physics Chapter 39 Question 6

HW 09 - Chapter 39 * Blackbody Radiation and Continuous Spectra A blackbody is a substance that absorbs radiation of all wavelengths and radiates in a confinuous spectrum at all wavelengths. It is given the name blackbody because an object that absorbs light at all wavelengths appears black to the human eye. By the end of the 15th century, several properties of blackbody radiation had been established. First, the total intensity I (the average rate of radiation of energy per unit surface area) emitted from a blackbody was shown to be proportional to the fourth power of its temperature: I=oT! This is called the Sfefan-Bolfzmann law for a hiackbody. The constant of proportionality o is known as the Stefan-Boffzmann constant and was determined to be o = 5.67 x 10~ W/(m? - K*). It had also been discovered that the wavelength at which the radiation intensity was maximum varied inversely with temperature. This result, known as the Wien displacement law, is written AT =290 %10 m- K, where A is the wavelength with the greatest radiated intensity. ? Help