In: Physics
Show that an electron jumping down from the 6th excited state down to the 5th excited state in a hydrogen atom emits an infrared photon of 12,367nm.
Show that in a hydrogen atom moving away from a bright star, and its electron jumps up from the 2nd excited state up to the 3rd excited state and has absorbed a photon with a wavelength of 690 nanometers. How fast is the atom moving? Show your work.