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        "quote": "- [<u id=\"concept-7-stern-gerlach-experiment\" class=\"concept-term\" data-concept-identity=\"urn:uuid:17282fd6-0595-40df-a266-9ec044b18a12\" data-concept-route=\"/concept-identities#concept-17282fd6-0595-40df-a266-9ec044b18a12\">斯特恩–盖拉赫实验(Stern–Gerlach experiment)</u>](../../../../../concepts/quantum-mechanics/stern-gerlach-experiment)：让一束自旋为 $1/2$ 的量子系统通过非均匀磁场。这里还涉及尚未讨论的粒子运动。不过，通过适当安排实验，可以选定方向 $\\mathbf w$，并将束流分成两个分量；算符 $\\mathbf w\\cdot\\mathbf S$ 在这两个分量上的特征值分别为 $+\\frac{1}{2}$ 和 $-\\frac{1}{2}$。",
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        "quote": "- The [<u class=\"concept-term\" data-concept-identity=\"urn:uuid:17282fd6-0595-40df-a266-9ec044b18a12\" data-concept-route=\"/concept-identities#concept-17282fd6-0595-40df-a266-9ec044b18a12\" id=\"first-148f5599bd45c2f21453-en\">Stern–Gerlach experiment</u>](../../../../../concepts/quantum-mechanics/stern-gerlach-experiment): pass a beam of spin-$1/2$ quantum systems through an inhomogeneous magnetic field. Particle motion, which we have not yet discussed, also matters here. The setup can nevertheless select a direction $\\mathbf w$ and split the beam into two components with eigenvalues $+\\frac{1}{2}$ and $-\\frac{1}{2}$ for the operator $\\mathbf w\\cdot\\mathbf S$.",
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