Thermal Radiation Laws.Consider two furnaces of the same size that emit thermal radiation. The thermal radiationspectrum of furnace A peaks at a wavelength of 1,000 nm, while that of furnace B peaks at2,000 nm. (a) In what portions of the electromagnetic spectrum do these furnaces emit most of their
radiation? What are their peak wavelengths in angstroms (˚
A)?
(b) According to Wien’s law: (i) Which one is hotter? (ii) What is the ratio of their temper-atures? © According to Stefan-Boltzmann’s law: (i) Which one emits more radiation (energy)? (ii)What is the ratio of the fluxes radiated by these furnaces?
