Electrons with Spin
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In this chapter, we describe a simple experiment about the spin property of an electron and use it to determine what is a physical observable in quantum mechanics. We give a general description of physical systems with two distinct states. We conclude this chapter with a brief description how spin can be used in magnetic resonance imaging, a technique that is used in hospitals to reveal what is going on inside your brain.
- W. Gerlach, O. Stern, Der experimentelle Nachweis der Richtungsquantelung im Magnetfeld. Zeitschrift für Physik. 9, 349 (1922)Google Scholar