Moreno Posted April 6, 2016 Share Posted April 6, 2016 (edited) An artificially created mini black holes could be huge source of energy for entire humanity - Stephen Hawking claims. http://www.express.co.uk/news/science/640496/End-of-the-world-Stephen-Hawking-black-hole-could-destroy-us Why does he believe that creation of such black holes will consume smaller amount of energy than what they would be able to provide later? Edited April 6, 2016 by Moreno Link to comment Share on other sites More sharing options...
Strange Posted April 6, 2016 Share Posted April 6, 2016 I don't think he says that. His suggestion is that if we could find such a black hole, then we could harness the radiation from it as a source of energy. Clearly, to create a black hole would take at least as much energy as you would ever get out of it. (But creating one is even further beyond our capabilities than safely harnessing one we found.) Link to comment Share on other sites More sharing options...
MigL Posted April 6, 2016 Share Posted April 6, 2016 Works in Romulan battle cruisers. 1 Link to comment Share on other sites More sharing options...
Daecon Posted April 7, 2016 Share Posted April 7, 2016 How long would such a black hole last before it evaporates? Would the power output increase as time goes on? Link to comment Share on other sites More sharing options...
Mordred Posted April 7, 2016 Share Posted April 7, 2016 (edited) The evaperation time is roughly proportional the cube of its mass. [latex]T_ev=\frac{c^2M_o^3}{3}[/latex]. Assuming the blackbody temperature of the BH is greater than the blackbody temperature of its surroundings. Further details here. https://en.m.wikipedia.org/wiki/Hawking_radiation One of the examples they give is in order for a BH to evaperate with the blackbody temperature of the Universe it must have mass less than 0.8% the mass of the Earth Edited April 7, 2016 by Mordred Link to comment Share on other sites More sharing options...
imatfaal Posted April 7, 2016 Share Posted April 7, 2016 For all your black hole needs http://xaonon.dyndns.org/hawking/ Change one variable and watch the changes ripple through the others. Small black holes are nasty, hot, and short-lived once you get to the confinement and energy-farming size A trillion tonnes might work - still a hundred million kelvin, lasts practically forever, small enough to be lost on a pinhead. Oh Yeah - forgot to mention the downside; I produce can more power on my pushbike. Link to comment Share on other sites More sharing options...
Endy0816 Posted April 7, 2016 Share Posted April 7, 2016 Infalling mass could work too. Just having a smallish stable one would give us some decent options though. Waste disposal. Swiping energy from rotation. Link to comment Share on other sites More sharing options...
Mordred Posted April 7, 2016 Share Posted April 7, 2016 For all your black hole needs http://xaonon.dyndns.org/hawking/ . Nice link A guy can have fun playing around with that calculator. Link to comment Share on other sites More sharing options...
Strange Posted April 7, 2016 Share Posted April 7, 2016 Nice link A guy can have fun playing around with that calculator. Sad but true. Link to comment Share on other sites More sharing options...
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