What does that do? I mean you can walk in 1G just fine, so probably we could go there, take a walk/sit there in 1.6G, and leave, right?
That means that if we put a 100km wide structure around it, we can service it easily(?) even without robots.
That means that if we put a 100km wide structure around it, we can service it easily(?) even without robots.
Near a small black hole, the field changes rapidly and is very strong.
It's a "pull" effect, meaning that if you were oriented with your feet towards the object as described by the GP, and 2m tall, your feet would experience 1.6 G more "gravity" than your head. It's a tidal force, literally working to pull you apart (same effect causes tides on Earth).
If you were to fall into the black hole, at some point you'd be "stringified" as that force stretched you into spaghetti shape.
If there were a structure to stand on, rather than you being in orbit, the force of gravity would be about 160 billion times the force of gravity on Earth (~1,594,000,000,000 m/s^2).
That's for a 10,000,000 Earth mass black hole at 50 km.
This particular one may not be practical for energy generation, but it would be obviously worth looking for others of more useable mass.
Good luck having enough energy to build a structure around it! ha
We are talking about small primordial black holes, in the vicinity of 10-50 times mass of Earth.
At 10 Earths, the radius is 8cm (!!!) and at 50 Earths it is still measly 44cm.
For an object 10x the size of the earth, a satellite would need to travel at 282300m/s to orbit the object at 50km. He’s off by a factor of 1000, due to units change from m to km. This is about a thousandth of the speed of light, but about 4x the speed of the fastest manmade object.
If you weren’t at orbital velocity and were stopped instead, you’d be pulled towards the black hole at 162600g of acceleration.
10mass of the earth is a lot of mass. You get pulled towards the earth at the rate of 1g when you’re (earth’s radius) distance away from the center of earth, you’re dealing with an insane amount of force when you’re only 50km away.
Another point of using black hole is that you decide its output (by deciding how much matter falls in) which greatly helps building dyson sphere. You can't modify Sun output.
It’s hard enough to build a dyson sphere at 1*earth radius, the amount of forces acting on the structure at 50km radius is insane.
By the time a swarm of robots will process blueprints and take raw materials and construct the structure semi-autonomously or even completely autonomously.
The structure would most certainly not admit human presence. It only has to redirect radiation to where it is useful (maybe send a starship on a laser beam, for example).
Or, perhaps our extropian descendants won't care about travel time. ;-)
OR, maybe the black hole could power a hyperspace portal or something equally exotic...
Regardless, having a compact object nearby to play with would be fun!
I really wonder what will the societal implications of such a path being possible are going to be.
There are plenty of people that will be willing to push a pause button right now to be able to wake up in a world where you could buy a ticket to mars, add to that the quite likely possibility of becoming a millionaire if not a billionaire if you put enough money into any inflation beating investment and you get quite the incentives package.
Sure you might never wake up because the world is going to end in a nuclear holocaust or your icebox will experience a kernel panic 17 years into your suspended animation but overall this quite likely be a much lower possibility than dying prematurely today.