• IR heat lamp• ‘red hot’• silver heat shield
–Stefan-Boltzman law: R = T4
–Wien’s displacement law: mT = 2.898£10-3 m¢K
–Rayleigh-Jeans formula: UV Catastrophe
–Planck’s law: quantization ‘h’
RayleighJeans
formula
Photoelectric effect
Photoelectric effect