![Artwork by Barron Storey of Gravity Probe B: Superconductivity and SQUIDs](https://www.nasa.gov/wp-content/uploads/2023/03/7_squid1.jpg)
Superconductivity and SQUIDs
Reading the spin direction of a perfectly round object presented experimenters at Stanford with a complex and critical problem. Solving that problem required developing a way to observe or “readout” the spin direction of the gyroscope in relation to the curvature and rotation of space-time.
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https://www.nasa.gov/image-detail/superconductivity-squids/
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