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I thought Einstein said that over 100 years ago. From my understanding gravity is not a force but a curvature of space time, did I misread something? The reall

by fleitz 16y ago

I thought Einstein said that over 100 years ago. From my understanding gravity is not a force but a curvature of space time, did I misread something? The really interesting bit about black holes and universes encoding information on the surface is this: The Chandrasekhar limit radius for a mass equal to the weight of the universe, once you figure that out, look up the best known estimate for the radius of the universe.

ars 16y ago
He called it a psudoforce. The difference is that a real force is felt no matter your frame of reference, but a psudoforce changes with different reference frames. I've never noticed the different to have any implications though, and not everyone even agrees with it, since gravity does have some elements of a real force. See: http://www.av8n.com/physics/fictitious-force.htm http://www.av8n.com/physics/fictitious-force.htm for a pretty complete discussion.
Stormbringer 16y ago
Or in other words, a black hole is something that light never escapes from, and the universe is also something that light never escapes from. Ignoring hawking radiation of course... ... unless the cosmic microwave background is the equivalent of the hawking radiation given off by black holes (note: for the picky, before you object, consider that hawking radiation consists of when one part of a short lived mutually annihilating pair of particles falls into the event horizon and the other falls out (hence gets radiated away) and thus from the point of view of those inside the black hole it would appear as those there was a constant rain of particles falling in... which I'm equating here to the microwave background noise), which would imply that our universe is shrinking... ...unless it implies that our universe is getting bigger, maybe if our universe is a black hole with hawking 'radiation' then on the other side of the 'universal event horizon' things work a bit differently and it is matter which is more likely to fall in, not anti-matter... ... which would explain why baryonic matter in this universe has an overwhelming tendency towards matter instead of anti-matter, which is one of those really big still outstanding questions in science...
- cmaggard 16y ago
  Did you read this somewhere or are these your own thoughts? I'd like a citation or to subscribe to your newsletter, respectively. Very intriguing.
mryall 16y ago
The title is poorly chosen. The article describes a new proposed method of formulating gravity in terms of quantum physics. Gravity is clearly not a 'force' according to the common Newtonian definition of that word.

by fleitz 16y ago

ars 16y ago

He called it a psudoforce. The difference is that a real force is felt no matter your frame of reference, but a psudoforce changes with different reference frames. I've never noticed the different to have any implications though, and not everyone even agrees with it, since gravity does have some elements of a real force. See: http://www.av8n.com/physics/fictitious-force.htm http://www.av8n.com/physics/fictitious-force.htm for a pretty complete discussion.

Stormbringer 16y ago

Or in other words, a black hole is something that light never escapes from, and the universe is also something that light never escapes from. Ignoring hawking radiation of course... ... unless the cosmic microwave background is the equivalent of the hawking radiation given off by black holes (note: for the picky, before you object, consider that hawking radiation consists of when one part of a short lived mutually annihilating pair of particles falls into the event horizon and the other falls out (hence gets radiated away) and thus from the point of view of those inside the black hole it would appear as those there was a constant rain of particles falling in... which I'm equating here to the microwave background noise), which would imply that our universe is shrinking... ...unless it implies that our universe is getting bigger, maybe if our universe is a black hole with hawking 'radiation' then on the other side of the 'universal event horizon' things work a bit differently and it is matter which is more likely to fall in, not anti-matter... ... which would explain why baryonic matter in this universe has an overwhelming tendency towards matter instead of anti-matter, which is one of those really big still outstanding questions in science...

cmaggard 16y ago
Did you read this somewhere or are these your own thoughts? I'd like a citation or to subscribe to your newsletter, respectively. Very intriguing.

mryall 16y ago

The title is poorly chosen. The article describes a new proposed method of formulating gravity in terms of quantum physics. Gravity is clearly not a 'force' according to the common Newtonian definition of that word.