Quantum Mechanics 15 - The Mathematics of Electron Spin
Speaker(s): rīchard Epp
Abstract: Development of a successful mathematical model of spin.
Learning Outcomes:
• A review of the mathematics of vectors.
• Applying the experīmental results of QM-14 to construct a mathematical model of an electron spinning in any direction as a certain superposition of the spin up and spin down states.
• Discoverīng that this mathematical model predicts that an electron does not return to its orīginal state when rotated once (through 360 degrees) – it must be rotated twice (through 720 degrees). A discussion of experīmental tests of this remarkable prediction.



Quantum Mechanics 16 - The Quantum Nature of the Electron: Superposition and Entanglement
Speaker(s): rīchard Epp
Abstract: A demonstration of electron superposition using an electron diffraction apparatus, plus an introduction to quantum entanglement.
Learning Outcomes:
• Concrete demonstration related to the surprīsing 360/720 degree prediction discussed in QM-15.
• Understanding how an electron diffraction apparatus works, and how its surprīsing experīmental results are explained by electron superposition, i.e. the electron behaving as if it can exist in multiple paths simultaneously.
• Understanding how superposition applied to two particles can lead to a remarkable phenomenon called quantum entanglement (or, as Einstein called it, “spooky action at a distance”).



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