social topic

2010-09-11 05:45:35 pm

Super Secret Area - Dead Ahead!

And why on earth (geddit?) would they measure it in Metres? With all this talk of the Universe, where does He-Man fit in?

072

2010-09-11 05:46:14 pm

coral to complement blue

Quick google search gave me 10^(10^29) meters. Whatever.

I'd love to know how they came up with that number.

tomatobob

2010-09-11 05:50:36 pm

One shall stand, one shall ball.

Quote from Gaius_4:

How far would you have to travel to reach another universe? aiwebs_011

Just head for the second star on the right and go straight on till morning. It's not far.

Cpadolf

2010-09-11 05:52:40 pm

Almost happy

I hate that I had to google to remember where that was from, ironically enough due to growing up.

Gaius_4

Edit history:

Gaius_4: 2010-09-11 05:54:20 pm

2010-09-11 05:53:42 pm

Quote from 072:

Quick google search gave me 10^(10^29) meters. Whatever.

I'd love to know how they came up with that number.

Just guessing... Taking the estimated age of the Universe, which, from last I've heard is supposed to be flat, then calculating for expansion from the supposed point of origin. That gives an idea of the size, so the extent of that expanse would mean the end of reality.... Or whatever. I'm mostly rambling / don't care since knowing or not won't benefit me in any way.

Quote from tomatobob:

Quote from Gaius_4:

How far would you have to travel to reach another universe? aiwebs_011

Just head for the second star on the right and go straight on till morning. It's not far.

Hmm-hmm. :) It's not a matter of distance, but of how deep.

Prime Hunter

2010-09-11 05:58:56 pm

Quote from Gaius_4:

...from last I've heard is supposed to be flat...

A 2D universe? How does that work if you can go in any direction from a given point in space? (Basically, how can the universe be on a flat plane if you can move around in any direction on a 3D plane?)

arkarian

2010-09-11 06:03:16 pm

red chamber dream

think he just means flat rather than round. i've never heard that though.

Idkbutlike2

2010-09-11 06:03:57 pm

I've heard that plenty of times on space documentaries. From our current perspective, the universe is in fact flat.

tomatobob

2010-09-11 06:04:16 pm

One shall stand, one shall ball.

Quote from Cpadolf:

I hate that I had to google to remember where that was from, ironically enough due to growing up.

Being perpetually twelve does have it's advantages!

arkarian

2010-09-11 06:07:20 pm

red chamber dream

i haven't heard flat so much as "constantly expanding". if that means expanding in only 2 dimensions, then ok.

Gaius_4

Edit history:

Gaius_4: 2010-09-11 06:11:34 pm

2010-09-11 06:09:18 pm

I know he's a militant atheist but what he says makes sense.

There's a much longer version peppered with a lot of diatribe, but overall it's pretty interesting. But it still wouldn't disprove the existence... Sorry. I won't go there. aiwebs_004

072

2010-09-11 06:11:27 pm

coral to complement blue

Interesting, indeed.

To answer your original question, Gaius, you would have to travel 4 x 10^26 meters to reach a parallel universe, because that is where the most distant objects visible to us are, i.e. the end of our observable universe / our Hubble volume. This is how universes are defined in multiverse theory, apparently.

arkarian

2010-09-11 06:14:11 pm

red chamber dream

lol i never said it wasn't flat. i'd just never heard that before. cool.

Gaius_4

Edit history:

Gaius_4: 2010-09-11 06:15:22 pm

Gaius_4: 2010-09-11 06:15:01 pm

2010-09-11 06:14:20 pm

Quote from 072:

To answer your original question, Gaius...

:-) It was actually a facetious question. Meaning the boundaries of this physical universe.... And going beyond it would be impossible. Physically. :-/

Cpadolf

2010-09-11 06:15:27 pm

Almost happy

Quote from Gaius_4:

Quote from 072:

Quick google search gave me 10^(10^29) meters. Whatever.

I'd love to know how they came up with that number.

Just guessing... Taking the estimated age of the Universe, which, from last I've heard is supposed to be flat, then calculating for expansion from the supposed point of origin. That gives an idea of the size, so the extent of that expanse would mean the end of reality.... Or whatever. I'm mostly rambling / don't care since knowing or not won't benefit me in any way.

Nah, 10^(10^29) meters is way, way further than that, it's a number with a hundred million billion trillion zeroes, and from some quick calculation I only got the length of the universe to be about 4*10^26-7 or something meters.

Quote from Gaius_4:

I know he's a militant atheist but what he says makes sense.

There's a much longer version peppered with a lot of diatribe, but overall it's pretty interesting. But it still wouldn't disprove the existence... Sorry. I won't go there. aiwebs_004

I actually posted the full version of that video in this thread about one hour ago (not embedded though). It's extremely interesting. IIRC the "flat" universe he is speaking of isn't flat in the sense of being 2D, though I don't remember exactly what it was.

[quote="Gaius_4"][quote="072"]Quick google search gave me 10^(10^29) meters. Whatever.

I'd love to know how they came up with that number.[/quote]

Just guessing...  Taking the estimated age of the Universe, which, from last I've heard is supposed to be flat, then calculating for expansion from the supposed point of origin.  That gives an idea of the size, so the extent of that expanse would mean the end of reality....  Or whatever.  I'm mostly rambling / don't care since knowing or not won't benefit me in any way.[/quote]

Nah, 10^(10^29) meters is way, way further than that, it's a number with a hundred million billion trillion zeroes, and from some quick calculation I only got the length of the universe to be about 4*10^26-7 or something meters.

[quote="Gaius_4"]I know he's a militant atheist but what he says makes sense.

http://www.youtube.com/watch?v=Pr9aQ1hpkks

There's a much longer version peppered with a lot of diatribe, but overall it's pretty interesting.  But it still wouldn't disprove the existence...  Sorry.  I won't go there. [aiwebs_004][/quote]

I actually posted the full version of that video in this thread about one hour ago (not embedded though). It's extremely interesting. IIRC the "flat" universe he is speaking of isn't flat in the sense of being 2D, though I don't remember exactly what it was.

Prime Hunter

2010-09-11 06:17:23 pm

Quote from arkarian:

i haven't heard flat so much as "constantly expanding". if that means expanding in only 2 dimensions, then ok.

Yeah, putting it that way makes a lot more sense to me than thinking of it as 2D vs 3D.

Gaius_4

2010-09-11 06:17:26 pm

I thought of it as the expansion of the universe was only in an outward direction (kind of flat) not a literal 2D (of course). Like the waves on the surface of water when you drop something into it.

072

2010-09-11 06:18:32 pm

coral to complement blue

It seems like the flat universe thing relies on the premise that the universe came from nothing, not the other way around.

Cpadolf

2010-09-11 06:20:37 pm

Almost happy

Militant atheist is such derogatory term btw, it's not like he is going around killing or terrorizing people like for example militant vegans.

072

2010-09-11 06:21:42 pm

coral to complement blue

In this case it kind of invalidates his point, though.

Gaius_4

Edit history:

Gaius_4: 2010-09-11 06:23:31 pm

2010-09-11 06:21:57 pm

Quote from Cpadolf:

Militant atheist is such derogatory term btw, it's not like he is going around killing or terrorizing people like for example militant vegans.

Ha-ha. Okay. Perhaps "Bitter" is a more suitable term.

Quote from 072:

In this case it kind of invalidates his point, though.

Mine or the guy in the video?

072

2010-09-11 06:23:54 pm

coral to complement blue

Guy in the video.

Cpadolf

2010-09-11 06:24:53 pm

Almost happy

Quote from 072:

Guy in the video.

Eh, you'd have to watch the whole thing. Taken out of context like that it just sound like he wants to believe in a flat universe because it's the only universe where he doesn't have to believe in a god, and that's not really the case.

072

2010-09-11 06:27:10 pm

coral to complement blue

Basically, his argument is:

1. It is possible that the universe began from nothing
2. If the universe began from nothing, then the universe must be flat
3. Therefore, the universe is flat

Which is not a valid argument even if the premises are true.

lol my philosophy professor would be so proud

Cpadolf

2010-09-11 06:28:31 pm

Almost happy

Quote from 072:

Basically, his argument is:

1. It is possible that the universe began from nothing
2. If the universe began from nothing, then the universe must be flat
3. Therefore, the universe is flat

Which is not a valid argument even if the premises are true.

lol my philosophy professor would be so proud

Again, you'd have to watch the whole lecture. He neither begins nor ends to talk about the shape of the universe there.