You could theoretically have something like a 1000kg mass which was lifted throu... | Hacker News

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		oh_sigh on Aug 1, 2015 \| parent \| context \| favorite \| on: GravityLight: Generate light with gravity You could theoretically have something like a 1000kg mass which was lifted through a series of pulleys...

datashaman on Aug 1, 2015 [–]

what lifts them?

oh_sigh on Aug 3, 2015 | [–]

A human does.

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