Uploaded July 2022 | Updated September 2026, 3 weeks ago

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This Predict-Explain-Observe-Explain demonstration shows how the associated wavelength of the electron changes with the accelerating voltage in an electron diffraction tube. This video supports Activity 1 - Experiment 3 in Beyond Bohr: A Quantum Approach to the Atom.

Download the free teacher's guide, modifiable worksheets, and supporting materials at: resources.perimeterinstitute.ca/products/beyond-bohr

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