Ignoring the effects of fine structure, this exactly solvable system has energy levels equal to negative 13.6 electronvolts over n-squared, with no dependence on the quantum numbers l and m.
As a graduate student, Robert Retherford contributed to a discovery about this system's spectrum that was explained using one-loop corrections to its self-energy. The height of the woman on the Pioneer plaque is written as eight times a length scale defined by one feature of this system. That feature, which arises from splitting between its singlet and triplet states, was first observed in 1952 by Ewen and Purcell. Interactions with the vacuum cause a small splitting between two levels of this system called the (*) Lamb shift. This system exhibits a hyperfine 1420 megahertz transition known in radio astronomy as the 21-centimeter line. Ignoring the effects of fine structure, this exactly solvable system has energy levels equal to negative 13.6 electronvolts over n-squared, with no dependence on the quantum numbers l and m. For 10 points, name this quantum system consisting of a proton and an electron, which is the lightest chemical element.
As a graduate student, Robert Retherford contributed to a discovery about this system's spectrum that was explained using one-loop corrections to its self-energy.
hydrogen atom