General Laws of Radiation
¥All objects above 0
K emit radiant energy
¥Hotter objects
radiate more energy per unit area than colder objects, result of Stefan-Boltzman
Law
¥The hotter the radiating body, the
shorter the wavelength of maximum radiation, result
of WienÕs
Displacement Law
¥Objects that are
good absorbers of radiation are also good emittersÉtodayÕs
lecture!