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## Homework Statement

An electron is trapped in an infinite square-well potential of width 0.5 nm. If the electron is initially in the n = 4 state, what are the various photon energies that can be emitted as the electron jumps to the ground state?

## Homework Equations

The Schroedinger Equation:

-[STRIKE]h[/STRIKE]/2m*d^2Y/dx^2 + V*Y = E*Y

En = - Eo/n^2

## The Attempt at a Solution

My understanding is that Y(0) = Y(L) = 0, making them the boundary conditions.

You need to find the solution for Y by solving the Schroedinger Eq'n, which is a Differential Equation.

I'm totally blank afterwards.