Hmm, I really don't understand that reply. Isn't n=1 the ground state? n can't equal 0 right? The link you sent me to is also a little umm.... technical for me to understand. Is there a plain english way for this to be explained? I figured if n=3, it's going to create a wavelength when it jumps to n=2, and once again when it jumps to n=1, creating 2 wavelengths altogether...