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Gravity Probe Spin Precessing magnet in space

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Gravity Probe Spin Precessing magnet in space

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Gravity Probe B, a satellite containing four highly spherical niobium-coated fused quartz gyroscopes in a cryogenic environment, measured precession of angular momentum of the gyroscopes due to gravitational effects predicted by general relativity [1]. Electrons have angular momentum whose origin is of a different nature: intrinsic spin, which is a fundamentally quantum phenomenon

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