Radiating objects
Germination of the next model: from the properties of the radiation emitted by hot objects
all objects glow, emit electromagnetic radiation
at low and normal temperatures this radiation is invisible
all objects at temperatures different from zero emit a continuous spectra of electromagnetic radiation
Distribution of the intensity of the electromagnetic radiation versus the wavelength --> spectral distribution curve
Total intensity of the radiation ~ T4 (Stefan’s law)
The position of the maximum in the spectra, changes with temperature:
?maxT=const (Wien’s displacement law)
The spectral distribution curve does not depend on the radiating material (if we use a cavity) only on T --> universal shape