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Activities

Small Group Activity

30 min.

de Broglie wavelength after freefall

This activity follows https://paradigms.oregonstate.edu/act/2525 and requires at minimum the end of the lecture which discusses this experiment.

In https://paradigms.oregonstate.edu/act/2525 you learned about an experiment in which rubidium atoms are dropped from a trap into an optical two-slit experiment. During this experiment the atoms fall a total of 1.5 meters. What is the de Broglie wavelength of an atom after falling from rest 1.5 m? \begin{align} \lambda &= \frac{2\pi\hbar}{p} \end{align}

This very short lecture introduces Wein's displacement law.

Small Group Activity

30 min.

Optical depth of atmosphere
In this activity students estimate the optical depth of the atmosphere at the infrared wavelength where carbon dioxide has peak absorption.
  • Found in: Contemporary Challenges course(s)