Stern–Gerlach experiment
By: Stern and Gerlach (1922)
In quantum physics, the Stern–Gerlach experiment demonstrated that the spatial orientation of angular momentum is quantized.
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Stern–Gerlach experiment (1922)
Performed by: Stern and Gerlach
In quantum physics, the Stern–Gerlach experiment demonstrated that the spatial orientation of angular momentum is quantized.
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What makes Stern–Gerlach experiment significant?
This experiment is remembered because it gave scientists a way to directly test a theory about nature rather than just theorizing about it. The result either confirmed or challenged what physicists believed at the time.
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About Stern–Gerlach experiment
In quantum physics, the Stern–Gerlach experiment demonstrated that the spatial orientation of angular momentum is quantized. Thus an atomic-scale system was shown to have intrinsically quantum properties. In the original experiment, silver atoms were sent through a spatially-varying magnetic field, which deflected them before they struck a detector screen, such as a glass slide. Particles with non-zero magnetic moment were deflected, owing to the magnetic field gradient, from a straight path. The screen revealed discrete points of accumulation, rather than a continuous distribution, owing to their quantized spin. Historically, this experiment was decisive in convincing physicists of the reality of angular-momentum quantization in all atomic-scale systems.
After its conception by Otto Stern in 1921, the experiment was first successfully conducted with Walther Gerlach in early 1922.
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