5 ms·
https://en.m.wikipedia.org/wiki/Bekenstein_bound https://en.m.wikipedia.org/wiki/Bekenstein_bound It gives the maximum amount of data in space before collapsin
by sacheendra 8y ago
https://en.m.wikipedia.org/wiki/Bekenstein_bound https://en.m.wikipedia.org/wiki/Bekenstein_bound
It gives the maximum amount of data in space before collapsing into a black hole.
- akvadrako 8y agoAnd it's something like 10^35 hellabits / mm³, so we have a ways to go.
- mrguyorama 8y agoMaximum mathematical is not the same as maximum achievable
- crispyambulance 8y agoYeah, but both are very interesting, as are specific constraints that can be applied, like what's possible in 1D or 2D or 3D and how quantum mechanical phenomena enters into the limitations.
- ctdonath 8y agoHelps the discussion to bracket possibilities. If there's an absolute hard limit somehow, let people know so they don't assume it's possible to go further. I find this useful in discussing solar power: there is an absolute maximum of 1300 watts per square meter; most people don't know this and implicitly assume substantially higher is achievable.
- gjm11 8y agoThe amusing thing about the Bekenstein bound is that it's per millimetre squared, not per millimetre cubed. The amount of information you can pack into a given region of space scales like length^2, not length^3. For the sorts of scales human beings are interested in, of course, the Bekenstein bound is a long long way from being relevant, and what matters for us in principle is volume rather than area. (There are practical difficulties in using "substantially" 3-dimensional regions for storage, but they have nothing to do with the danger of the storage device turning into a black hole.)