Question

You have two types of "nanodots” in vials in your laboratory. The nanodots in both cases look like powder, and you forgot to label them. You know that an electron in one type of nanodot behaves like a quanton in a one-dimensional box, but an electron in the other type of nanodot has evenly spaced energy levels, like that of a simple harmonic oscillator. So you take nanodots from one unlabeled vial, illuminate them with ultraviolet light to excite the electrons, and observe the photons emitted. You find that the longest two wavelengths emitted by your chosen dots are 830 nm (in the near infrared) and 496 nm (blue-green). Which kind of nanodot is this? Explain. (Show both that one type explains the data and that the other does not.)

Answer 1

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