Do observations of intergalactic gaps indicate that dark energy follows the inverse square law?
- Vote on answer
- posted
12 years ago
-- Reply in group, but if emailing add one more zero, and remove the last word.
Re: Larkin in an advertisement...
Loading thread data ...
- Vote on answer
- posted
12 years ago
That kind of assumes that we're at the center of the universe. Again! :)
Otherwise we'd see more and farther in one direction.
-- Reply in group, but if emailing add one more zero, and remove the last word.
- Vote on answer
- posted
12 years ago
Isn't everywhere at the center of the universe?
John
- Vote on answer
- posted
12 years ago
Not if some things are closer to the wall.
-- Reply in group, but if emailing add one more zero, and remove the last word.
- Vote on answer
- posted
12 years ago
Everything is at the same distance from the wall. If we were flatlanders, we'd be on the surface of a (really big) balloon. Most of the balloon is expanding although there are local mass concentrations where attraction overcomes the expansion. To the inhabitants on the surface of the balloon, there is no center or rather any place is just as much a "center" as any other place.
It's not a rigorous analogy; AIUI the questions of closed versus open and positive/negative/flat curvature aren't answered yet for the real universe. I really haven't been keeping up with the literature, though. One day all of the stacks of journals will fall over and that'll be the end... ;-)
-- Rich Webb Norfolk, VA
- Vote on answer
- posted
12 years ago
I'm familiar with all that, but it's not compatible with being inside a bubble (note, he said we're in it, not on the surface) where red-shifed galaxies are near the wall.
-- Reply in group, but if emailing add one more zero, and remove the last word.
- Vote on answer
- posted
12 years ago
Red-shift increases linearly with distance from Earth. So either we are at the center of the universe, or everywhere is at the center of the universe.
John
- Vote on answer
- posted
12 years ago
I don't know. Beyond my pay grade. Dark energy was discovered long after my direct involvement with this stuff. I trust the researchers to have determined that there is acceleration though so however much I may dislike dark energy as a concept it does fit with the observations.
This simulation is relatively old hat. They have just got a brand new £2M supercomputer to do even bigger and more complete simulations.
formatting link
and
formatting link
Has more up to date details.
Regards, Martin Brown
- Vote on answer
- posted
12 years ago
-- I never said "if n becomes infinite", I said "if n+1 ever becomes infinite", which means that if n+1 becomes infinite, then n must be equal to infinity-1.
- Vote on answer
- posted
12 years ago
Right, and I'll bet on the latter.
-- Reply in group, but if emailing add one more zero, and remove the last word.
- Vote on answer
- posted
12 years ago
-- Your brother is your dad? Assuming your brother is older than you are, of course, ;)
- Vote on answer
- posted
12 years ago
Ya know, I did get that after a minute, and it's biologically possible, but not possible any other way.
-- Reply in group, but if emailing add one more zero, and remove the last word.
- Vote on answer
- posted
12 years ago
I hope we are a bubble in a glass of beer.
- Vote on answer
- posted
12 years ago
Futurama fans might disagree.
- Vote on answer
- posted
12 years ago
I don't get the reference. I'm a Pinky and The Brain man.
-- Reply in group, but if emailing add one more zero, and remove the last word.
- Vote on answer
- posted
12 years ago
formatting link
I expected so. All men of Quality are.
Best regards, Spehro Pefhany
-- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
- Vote on answer
- posted
12 years ago
No, you really don't make any sense when you cackle.
I see well enough (albeit with glasses - but rather the reverse of myopic) to know that you don't know the days of the week.
- Vote on answer
- posted
12 years ago
-- I don't wear glasses, but it's interesting to watch you make a spectacle of yourself. The days of the week?
- Vote on answer
- posted
12 years ago
Maybe he's got his 'Day of the week' pantes in a bunch? :)
-- It's easy to think outside the box, when you have a cutting torch.
- Vote on answer
- posted
12 years ago
If you are out there with it, you can never be AT infinity either. So, there is always room to add one more, silly man.
That is why there are no "units" of infinity.