Given that hbar = 1.055*10^-34 J*s, find the wavelength in nm of light emitted from a hydrogen atom when its electron moves from the n=6 state to the n=2 state.
A) Can you see this light with your eye?
B)Suppose that an electron is bound to a nucleus so that you know its location to within the size of the atom (0.10nm). What is the minimum uncertainty in the momentum of the electron?