4 ms·
If I understand this correctly, this puts an upper bound on the computational ability of a Dyson sphere surrounding a star.
by sneak 3y ago
If I understand this correctly, this puts an upper bound on the computational ability of a Dyson sphere surrounding a star.
- _a_a_a_ 3y agodyson spheres compute?
- icegreentea2 3y agoThey don't have to. You can interpret the original comment as "puts an upper bound on the computational ability of a Dyson sphere if it dedicated all captured energy to computation".
- TeMPOraL 3y agoDepends. For useful computing? See comment by 'icegreentea2. For more abstract take - everything computes something all the time.
- rossnordby 3y agoFor irreversible computation, yup. If reversible computation turns out to be practical, things are a little weirder, and the bounds are... further away. Stuff like: https://en.wikipedia.org/wiki/Margolus%E2%80%93Levitin_theorem https://en.wikipedia.org/wiki/Margolus%E2%80%93Levitin_theor... https://en.wikipedia.org/wiki/Bremermann%27s_limit https://en.wikipedia.org/wiki/Bremermann%27s_limit The Landauer limit is dependent on temperature, though. If you fast forward the universe a little bit to let the CMB cool down, even irreversible computing can get pretty efficient in theory.