|May12-11, 12:32 AM||#1|
Length of a one-dimensional box with an electron inside
Another student was asking me about how to calculate L in a one-dimensional box, given that an electron with a wavelength of 418nm moves from energy-level n=2 to energy-level n=4.
Using, ΔE = Ef - Ei, I can say that ΔE = E4 - E2 = ((42 - 22) * h2 ) / (8mL2)
Rearranging for L is simple, but I was unsure on how to get ΔE. I used de Broglie to get speed and put that speed into KE = (1/2)mu2 and the teacher told me not to use that.
One of the lab teachers was telling me to use c = λv to get v and then use E = hv to calculate the energy that the electron absorbs to move from n2 to n4.
My question is why we are using E = hv. Why is light being associated with the electron?
|May12-11, 07:04 AM||#2|
|May13-11, 02:11 AM||#3|
Yeah, I was wondering about that. I'll go see if I can pull up the original problem. The wording was really really bad.
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