PowerPoint Presentation - NATS 101, Section 36 Lecture 5 Radiation by Dr. David Flittner

WienŐs Law

Relates the wavelength of maximum emission to the temperature of mass

lMAX= (0.29«104 mm K) « T-1

Warmer Objects => Shorter Wavelengths

ĄSun-visible light

lMAX= (0.29«104 mm K)«(5800 K)-1 @ 0.5 mm

ĄEarth-infrared radiation

lMAX= (0.29«104 mm K)«(290 K)-1 @ 10 mm