- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
Does gravity have an infinite range?
Posted on 1/25/16 at 11:26 pm
Posted on 1/25/16 at 11:26 pm
LINK
I frickin HATE how Reddit is formatted, but I stumbled across this gem of a thread an hour or two ago (can't even recall how at this point) and my mind is melted. Tons of crazy concepts discussed, from the idea that the universe is expanding faster than the speed of light in a way, to the concept of a "centerless" universe, to gravitational waves, the location of the Big Bang or lack thereof, and other crap.
Extremely interesting reading though if you are into that.
I frickin HATE how Reddit is formatted, but I stumbled across this gem of a thread an hour or two ago (can't even recall how at this point) and my mind is melted. Tons of crazy concepts discussed, from the idea that the universe is expanding faster than the speed of light in a way, to the concept of a "centerless" universe, to gravitational waves, the location of the Big Bang or lack thereof, and other crap.
Extremely interesting reading though if you are into that.
11
Posted on 1/25/16 at 11:28 pm to DavidTheGnome
idk...what does the bible say?
Posted on 1/25/16 at 11:30 pm to DavidTheGnome
quote:
Does gravity have an infinite range
yes, like a fart stops smelling as it dissipates, butt traces of my methane are still in your nose, just to low of a concentration for you to know
Posted on 1/25/16 at 11:31 pm to DavidTheGnome
Why not?
Posted on 1/25/16 at 11:35 pm to DavidTheGnome
quote:
Does gravity have an infinite range?
I would assume so, but I've got absolutely no background on the subject so in the true OT-spirit I'm prepared to argue tirelessly with anyone on this board that has a dissenting opinion.
On a similar note, I often watch the MinutePhysics and MinuteEarth videos on Youtube to pass the time while bored. I enjoy learning what I can, even if it seems somewhat trivial, such as How many mass extinctions have there been?
FTR, the answer is 3, 5, 8, or 11 depending on your perspective.
Posted on 1/25/16 at 11:35 pm to Hammertime
quote:
Why not?
One of the topics raised is if there is an absolute smallest quantifiable unit of force, thus a limit to gravity. And if gravity is the curvature of space time, is there an absolute smallest quantifiable unit of length for the space to curve to create it.
This post was edited on 1/25/16 at 11:36 pm
Posted on 1/25/16 at 11:37 pm to DavidTheGnome
quote:
One of the topics raised is if there is an absolute smallest quantifiable unit of force, thus a limit to gravity. And if gravity is the curvature of space time, is there an absolute smallest quantifiable unit of length for the space to curve to create it.
I literally can't even
Posted on 1/25/16 at 11:40 pm to DavidTheGnome
The universe is shaped exactly like the earth. You go straight long enough, you'll end up where you were.
Posted on 1/25/16 at 11:40 pm to DavidTheGnome
No and no
Posted on 1/25/16 at 11:47 pm to Hammertime
Great read. Thanks for posting.
Posted on 1/25/16 at 11:48 pm to Hammertime
quote:
No and no
I don't know enough to agree nor disagree, I've not read anything to suggest that there is a limit though.
How about this, gravity propagates at the speed of light. If the universe is infinite and expanding in all directions, even if the expansion rate at any point is significantly less than c the overall effect would be adding space of more than a light year from any point. This implies that space as a whole expands faster than light (in a way), and that there are points that even the effects of gravity traveling at the speed of light can't reach because the cumulative effect is that it expanded away faster than that?
Posted on 1/25/16 at 11:49 pm to GRTiger
I want to even.
But
But
quote:
I literally can't even
Posted on 1/25/16 at 11:52 pm to DeathValley85
well is there gravity in space?
Posted on 1/25/16 at 11:57 pm to ErectileReptile
Yes why do you think the planets rotate around the sun
Posted on 1/25/16 at 11:58 pm to WareagleTD
It was rhetorical
Posted on 1/25/16 at 11:59 pm to DavidTheGnome
quote:
This implies that space as a whole expands faster than light (in a way), and that there are points that even the effects of gravity traveling at the speed of light can't reach because the cumulative effect is that it expanded away faster than that?
I've basically given up on understanding what space is expanding inside of in the first place. Is it creating new space? I imagine an explosion that is expanding outward, but I'm incapable of comprehending what is going on "outside" of that explosion.
Posted on 1/26/16 at 12:00 am to ErectileReptile
But to answer seriously I would think that since literally every object in the universe has a gravitational attraction I would assume yes
Posted on 1/26/16 at 12:06 am to slackster
quote:
I've basically given up on understanding what space is expanding inside of in the first place. Is it creating new space? I imagine an explosion that is expanding outward, but I'm incapable of comprehending what is going on "outside" of that explosion.
im not sure if "inside of" is the right way to look at it, but maybe rather "within itself"? And there is no way for us to know what is "outside" the explosion if there is even an outside, because nothing we've observed indicates any edge to the universe (not to say there isn't one, it just doesn't seem currently possible for us to know one way or the other).
Posted on 1/26/16 at 12:10 am to DavidTheGnome
Of course it is. How else do you think Murph got the co-ordinates to the space station?
Posted on 1/26/16 at 12:14 am to ErectileReptile
quote:
But to answer seriously I would think that since literally every object in the universe has a gravitational attraction I would assume yes
you can fiqure out the gravitational attraction bn any two objects by using Newton's law. be prepared to be severely disappointed with r^2 being a denominator
btw did you know the universe is about 93 billion light years across. You got a known 13 billion in both directions but due to measuring redshift and knowing expansion physicist actually think its about 46 billion in both directions.
Page 1 of 3
Popular
Back to top
Follow TigerDroppings for LSU Football News