A Dyson sphere around a black hole

Re:A Dyson sphere around a black hole by brador on Thursday August 19, 2021 @02:42AM (#28231063)

How would you tap an accretion disk? How would you tap relativistic jets?

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Re:A Dyson sphere around a black hole by Qub3d on Thursday August 19, 2021 @03:46AM (#28231403)

Kurtzgesagt made a video explaining some possibilities. In short, you can throw mass or radiation at a spinning black hole and "steal" rotational energy from it.

https://www.youtube.com/watch?v=ulCdoCfw-bY

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Re:A Dyson sphere around a black hole by chii on Thursday August 19, 2021 @04:09AM (#28231512)

also, you can use light, instead of matter.

Termed the "halo drive", it's a very nice theoretical concept: https://www.youtube.com/watch?v=rFqL9CkNxXw

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Re:A Dyson sphere around a black hole by tanbog4 on Thursday August 19, 2021 @03:50AM (#28231426)

Heat water to produce steam, use steam to turn turbine. :P

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Re:A Dyson sphere around a black hole by avereveard on Thursday August 19, 2021 @04:43AM (#28231680)

steampunk had it right

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Re:A Dyson sphere around a black hole by devoutsalsa on Thursday August 19, 2021 @02:43AM (#28231072)

Solar panels?

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Re:A Dyson sphere around a black hole by andai on Thursday August 19, 2021 @03:44AM (#28231395)

How about a big ol' waterwheel?

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