A patent for a similar device from back in the 60s: http://www.google.com/patent... | Hacker News

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entangledqubit on July 30, 2014 | parent | context | favorite | on: A Nuclear Probe to Explore Earth’s Interior

A patent for a similar device from back in the 60s: http://www.google.com/patents/US3115194

Happened to see it while archiving the inventor's papers. :)

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