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A comment on Resolving the gravitational redshift across a millimetre-scale atomic sample.

Re:Resolving the gravitational redshift across a millimetre-... by phendrenad2 on Friday February 18, 2022 @12:42PM (#30388692)
Theoretically, could you use an 3D grid of these devices to continuously sample the gravitational potential they're experiencing, and build a dead-reckoning navigational system?
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Re:Resolving the gravitational redshift across a millimetre-... by pdonis on Friday February 18, 2022 @01:03PM (#30388989)
For measurements as accurate as this, if you sent out a fleet of these things to map the gravitational potential of the Earth by location, for example, you would find that the potential at a given location was changing all the time, so such a map wouldn't be useful for navigation.
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Re:Resolving the gravitational redshift across a millimetre-... by jcims on Friday February 18, 2022 @01:31PM (#30389325)
It would also make stealth-proof gravitational radar equivalent. You would probably have to work on the acronym though.
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