If we imagine a object made up of Hydrogen gas that is optically thick to all radiation, and is in thermal equilibrium, then, microscopically, photons will be emitted and absorbed as emission/absorption lines.
However, the overall object should emit radiation according to Planck’s Law, which describes intensity as a continuous function of wavelength (and temperature).
How does this occur and where do the photons we detect at wavelengths between spectral lines of hydrogen come from originally?
No comments:
Post a Comment