00:01
With the assumption that lx equals l, y equals l, first of all, we're going to have e is going to equal h squared over 8me over nx squared over l squared plus ny squared over ly squared, i'm sorry, l squared, which can then be factored as h squared, over 8 m .e.
00:44
L squared, nx squared plus ny squared.
00:55
Then nx equals ny equals 1 would give you the ground state.
01:09
This energy would be e11 equals h squared 8 mel squared 1 plus 1, which equals h squared, 4, m, e, l squared.
01:36
The next state above this would be nx equals 1, ny equals 2, or nx equals 2, ny equals 1.
01:55
And the energies for these are e12, which equals e21, these are really the same energy, and they're equal to h squared times 1 plus 2 squared.
02:10
Over 8 m .e .l squared, which then is equal to 5 .h squared, 8, m .e .l squared...