 And of course there are machines, contraptions to harness this, basically be a Dyson sphere, an enveloping sphere around the stationary black hole. So I wanted to be a sphere that harnesses and collars all the light energy emitted. So if you guys are like me, always been and always loved in these topics from a scientific speculating the existence and nature, what if trillions of years in the future, in the midst of a dark, cold, slow, lonely, heat death, the universe still harbors and after those trillions of years, as the fabric of those fleeting galaxies inevitably slip. What celestial to feed a future species that may even be or are interested at all is informed and inspired by finish it off. The final episode will be not just how we would use a black hole to energy from, but it's going to be what I use in interests, what would be the most meaningful thing they could do at the end of the universe when the sky is black because there's all the stars radiating heat and light have long ago expelled all their energy and collapsed into brown doors or black holes and there is no more light and everything is so dispersed from that would be caused loosely in proportion opposite to what you might think a trillion trillion year, even to turn on gush out power so that they burn out their tiny mass and vary. So the lifespan of black holes is proportional to the cube, the cube so one twice as massive emits only a quarter as massive what he meant a hundred as you can see the size in mass of a black hole would be one of the artificial black holes and especially can feed matter into them to replace what they might lose to Hawking radiation and vastly better than nuclear fission or gravitational singularity nature most efficiently and effectively to us being able to relative to all those other potential celestial phenomena like stars, neutron stars. Now this is a process that would take years or centuries and normally making them a very very attractive option for and this is all of course assuming that we can figure out how to make small black holes and feed them at an appropriate rate both of which are actually understand how to manipulate just like you have mass. Thanks to Molly make sure you guys don't mention that well looks like a number of things and it looks like a projectile which made me think ample of momentum it's not gravity was that an object times its velocity is its momentum its mass from the same amount of mass the spin displacement of mass by spinning fast and our sun actually rotates once a month but neutron stars rotate many times a second that's actually why pulsars make such handy clocks but it's only the young and this is all the point out that black holes of course spin as well neutron stars emit huge magnetic fields or isn't a result as it spins creates the magnetic fields just just as earth does as well with our molten iron what's amazing is that we can actually tap the precursor to dynamos is the disk slowed down as it leaked power as electricity and think about it you can run a magnet you know that's just one of those amazing you know just the tip of the iceberg in science that you know we pretended this was a magnet ran it along this wire here is closed you know it's open there but if we somehow soldered it together and real fast the magnet along this wire the acceleration of the magnetic field along the conductive material would actually induce a current in the wire it would make an amperage which just another word for a certain amount of charges certain amount of electron moving along the wire yeah I don't know I thought stealing away that black holes rotational energy now which is a large chunk in fact of its total mass energy is this a pretty attractive option and there's various various proposed ways of doing that relies on being able to remove the energy because black holes rotational energy is thought to be stored just outside the event horizon you obviously can't dip under an event horizon and suck the energy out but we can from outside in the aerobosphere there's also the plan for its knee jack process which is one of the lead candidates for explaining how quasars are actually powered so if you're familiar with quasars which I think are it's quasi stellar something how they are the brighter than actually most galaxies one quasar is brighter than this gives you an idea of just how much it also taps the aerosphere for power just and does it by using an accretion disk so you'd use this on a black hole that already had one or that you were feeding are very similar use the rapidly rotating magnetic field to harness electric electricity pull and as the matter basically won't gain kinetic energy same as if you drop a rock off a roof if you tied a spool of thread to that rock an axle through the spool you'd actually get a lot of electricity so so in the same way you could do the same thing for a black hole too so you could think about this concept as you dragging or kind of letting a cylinder that rotates and as it rotates kind of a generator cylinder its own little rotation can induce and inside it and the causes the rotation so by letting the black hole rotate your cylinder and uh off of manner dumped in disc because as the matter goes over the event horizon it gets so hot it starts to cool so even collecting that light off solar pan but there's another way quasar's work was mechanism but happens to have an equation you can use vision shows us the power via this process grows in the square short shield radius the distance from the center because it doesn't have a radius it just has the gravitational effects that cause other secondary characteristics like the short shield radius to exist but nonetheless if we increase the accretion disc and the magnetic field by all those rapidly extremely rapidly rotating interacting particles electricity and magnetism to rise and will increase as well this both of these will increase if we keep dumping matter and add mass and more mass and more in nature bigger black holes usually have a much larger accretion disc particularly the ones at the center of volatile young gal sometimes they don't have any matter presumably want to tap that power a lot a lot slower using much smaller black hole extracting rotational energy will eventually cause the black hole to slow and finally as things fall towards it they will simply go right into it and not be spinning around so once we stop the rotational momentum of the black holes what's going to be left is a still stationary black hole and you won't be able to suck anymore of its actual moving energy even if you dump matter and you're really not going to get that much of mass will still increase making it as efficiently as possible and remember the largest black hole brilliance of years to even larger or sorry lighter less massive artificial black holes can emit useful sources of power via hocking radiation the massive ones essentially aren't doing that at least not over periods of time less than again billions if not are presumed future for tonight we have at least a hundred trillion to get better at building sturdy material of course there are machines to harness this basically be a Dyson sphere an enveloping sphere around the stationary black hole so i'm going to be a sphere that harnesses and kill me that this thing lasts trillions of years but of course by then most of the matter will have already been eaten and exist reside inside building those machines are really it's really the only option after we've sucked out all the rotational energy the good reasons you'd actually want to wait a hundred trillion years to tap in for massive black holes because you don't need to dissipate from a single black hole and instead you want to use the energy the more powerful smaller black holes at a faster rate you might want to just simply continue to power your civilization instead of doing that risking the possibility of expending all the matter depleting radiation you might actually want to create one single supermassive black hole that emits energy at such a slow rate to even flip a bit a single binary digit if you guys enjoyed this too it's uh just kind of winging it hopefully it didn't show too much