3 ms·
That depends on what size of black hole you want to make. It works for large black holes (you need sufficient mass for the gravitational forces to be sufficient
by cletus 6y ago
That depends on what size of black hole you want to make. It works for large black holes (you need sufficient mass for the gravitational forces to be sufficient) but those black holes aren’t that useful.
Smaller black holes are harder to construct but way more useful.
- willis936 6y agoIt's simple, just deflate spacetime!
- elseweather 6y agoI'm curious what useful applications we have for black holes of any size
- jakeogh 6y agoIt's assumed that little ones are the most efficient mass to energy converters, via Hawking radiation.
- cletus 6y agoThere are actually a lot of theoretical applications. Black holes are likely the most efficient form of power generation that we currently know of. Black hole propulsion may well be the best form of interstellar starship propulsion. Black holes may also be the ultimate computer. If the universe continues based on it current understanding then eventually all the stars will be dead and the universe will be a dark place. The Black hole era will last trillions of time as long but may well be the golden age of civilization. Each of these topics is a rabbit hole.
- ThrustVectoring 6y agoThe theoretical limit of how efficiently you can turn energy into useful work depends on how cold your energy sink is. The coldest energy sink in an ever-expanding universe gets colder over time as everything spreads out and the fixed amount of energy occupies more and more space. So the hypothetical optimal end-state of an extremely old civilization is hibernating a bunch of very stable mass until the extreme far future, at which point they can drip-feed it into a black hole to do some extremely efficient computation.