Posts by Pau1mi11er 6 publicly visible posts • joined 7 Apr 2016
Given that pretty much all interactions with mass involve two bodies, would we notice if the mass of the antiparticle was negative? Gravitational interactions between +ve mass things and -ve mass things would produce a negative force, pushing them apart; two similar types would always pull together. Perhaps I need to think this through a bit harder though.
I think we can safely say that we wouldn't want to me be near one of these events when they go off. I wonder where the nearest ones are? We're not talking huge black holes here are we? They could be lurking anywhere!
What always strikes me about the speed of gravity is how symmetrical galaxies tend to be (well, the symmetrical ones anyway!) in photographs. Given that the light will have had to travel an additional n x 100,000 years to get from one side to the other and the galaxy at this side will have rotated round a fair bit in the mean time, you would have thought that the image we are seeing would be distorted a bit. And, given that the gravity from the far side stars and stuff will also be lagging behind where the stars "really" are then the whole structure would be getting distorted.
Any thoughts?
OK, so I did some better maths.
I presumed the diameter of the black hole was 10.6 light years (as stated above). But it's not, it's only 1e-16 light years so that makes things very different (if my numbers are correct).
However, g then becomes about 900m/s/s I think which could produce a nice orbit and tidal effects won't be too severe - someone else can work it out, my brain has now stopped working.
Ok, so I did the maths and the answer I get at the event horizon is (providing I've not made any errors which is highly likely)
g = 1e-18 m/s/s which seems very survivable to me (given that we quite happily live in 9.8 m/s/s).
Even going halfway to the singularity g only goes up to 1e-16 m/s/s
What do you think that would be like?
Not that I've looked at the source document or done any maths or anything, but I wonder what the gravitational field strength would be just inside (or even a few light years inside) the event horizon. At that sort of size I bet it is very survivable and there might be other planets etc happily wandering around looking out and not seeing the edge of their universe.
Any thoughts?
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