What other options are there apart from mentioned gravity? I mean there are wave... | Hacker News

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		comboy on June 9, 2023 \| parent \| context \| favorite \| on: Gravitational Machines What other options are there apart from mentioned gravity? I mean there are waves in materials like sound but that seem to be easier than EM.

alach11 on June 9, 2023 [–]

Neutrinos, perhaps.

comboy on June 9, 2023 | [–]

Ah, right, that's indeed high on the difficulty chart.

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