A wonderful little fact about the maximum power density inside the sun (spoiler: about the same as inside a compost pile!) ht @nattyoverhttps://twitter.com/chris_w_walter/status/1223021681918132224 …
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Pound for pound. What is the theoretical limit of power per unit volume a fusion reactor could produce? As a % of the sun’s? Or a heap of compost?
Comparison with power plants is a bit shaky because we rate them by *useful* power (work rate) not total power. Theoretical limit of work rate per unit volume? Controlled black hole accretion I guess. Maximised for small spinning black holes. But they wear out, so may not count.
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