Telescope Reviews: String theory and gravity

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CharlesW
sage

Reged: 11/02/12

Loc: Chula Vista & Indio, CA

String theory and gravity
#5617289 - 01/11/13 01:30 PM

I'm not a physisist so please take it easy on me. I've been watching the Sky At Night series on Youtube and they had a short discussion about string theory and gravity. It was the, "Our gravity might not be as strong as we think it should be because it is leaking into adjoining dimensions," argument. Assuming that this true for a moment and our gravity is leaking into other universes, what is leaking back our way? Or are we the "king of dimensions" and the sun rotates around the Earth, and we don't get anything from those other dimensions/universes?

Post Extras:

Pess
(Title)

Reged: 09/12/07

Loc: Toledo, Ohio

Re: String theory and gravity new

[Re: CharlesW]
#5617319 - 01/11/13 01:53 PM

There is a thought that dark matter may be gravity from other branes (a brane is kinda of a flat plane as opposed to a long string. ie: it is a string with length & width but no height whereas a string just has the length dimension).

This idea comes from M-theory and, may be, testable. If high energy particle collisions are found to yield less mass than the starting particles, it is theorized that this extra mass was knocked off 'our' brane into another dimension.

Pesse (In which case the Dimension of Cats would be very happy with all the extra string) Mist

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scopethis
Postmaster

Reged: 05/30/08

Loc: Kingman, Ks

Re: String theory and gravity new

[Re: Pess]
#5617472 - 01/11/13 03:35 PM

I think string theory is wrong cause a string can only be stretched to a limit before it snaps..then the Universe will begin to collapse....

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deSitter
Still in Old School

Reged: 12/09/04

Re: String theory and gravity new

[Re: CharlesW]
#5617498 - 01/11/13 03:55 PM

Quote:

I'm not a physisist so please take it easy on me. I've been watching the Sky At Night series on Youtube and they had a short discussion about string theory and gravity. It was the, "Our gravity might not be as strong as we think it should be because it is leaking into adjoining dimensions," argument. Assuming that this true for a moment and our gravity is leaking into other universes, what is leaking back our way? Or are we the "king of dimensions" and the sun rotates around the Earth, and we don't get anything from those other dimensions/universes?

And I thought it was just my new diet..

String theory is said to be a theory of gravity because it contains a spin-2 boson. Since the spin-2 boson is not really gravity (it's just the spin-2 boson), all such claims by string theorists are nonsense, and in fact you will never see them cook up a set of equations that reproduce even Newtonian gravity, much less GR.

-drl

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mich_al
Pooh-Bah

Reged: 05/10/09

Loc: Rural central lower Michigan ...

Re: String theory and gravity new

[Re: deSitter]
#5617929 - 01/11/13 08:14 PM

brane == membrane

just sayin

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llanitedave
Humble Megalomaniac

Reged: 09/26/05

Loc: Amargosa Valley, NV, USA

Re: String theory and gravity new

[Re: mich_al]
#5618193 - 01/11/13 11:05 PM

Probably at this point better thought of as a meme-brane.

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Pess
(Title)

Reged: 09/12/07

Loc: Toledo, Ohio

Re: String theory and gravity new

[Re: scopethis]
#5623044 - 01/14/13 04:42 PM

Quote:

I think string theory is wrong cause a string can only be stretched to a limit before it snaps..then the Universe will begin to collapse....

Pesse (Collapse? or unravel?) Mist

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scopethis
Postmaster

Reged: 05/30/08

Loc: Kingman, Ks

Re: String theory and gravity new

[Re: Pess]
#5625171 - 01/15/13 08:47 PM

that indicates that the Universe is nothing more than a big ball of twine....

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Ira
Carpal Tunnel

Reged: 08/22/10

Loc: Mitzpe Ramon, Israel

Re: String theory and gravity new

[Re: scopethis]
#5628859 - 01/17/13 08:47 PM

Call the plumber. I can't afford to loose any more mass from my brain.

/Ira

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Pess
(Title)

Reged: 09/12/07

Loc: Toledo, Ohio

Re: String theory and gravity new

[Re: scopethis]
#5630296 - 01/18/13 05:34 PM

Quote:

that indicates that the Universe is nothing more than a big ball of twine....

I found an alternate universe!

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llanitedave
Humble Megalomaniac

Reged: 09/26/05

Loc: Amargosa Valley, NV, USA

Re: String theory and gravity new

[Re: Pess]
#5630752 - 01/18/13 10:47 PM

Well, don't just string us along!

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deSitter
Still in Old School

Reged: 12/09/04

Re: String theory and gravity new

[Re: llanitedave]
#5631363 - 01/19/13 11:18 AM

Do they have good Chicago-style pizza? You can't find that anywhere these days!

-drl

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Skip
Starlifter Driver

Reged: 01/23/08

Loc: Fort Worth, Texas, USA

Re: String theory and gravity new

[Re: deSitter]
#5631366 - 01/19/13 11:20 AM

Are you implying that Chicago pizzas are stringy, or that they have lots of gravity?

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deSitter
Still in Old School

Reged: 12/09/04

Re: String theory and gravity new

[Re: Skip]
#5631376 - 01/19/13 11:25 AM

If the cheese is right, both!

-drl

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scopethis
Postmaster

Reged: 05/30/08

Loc: Kingman, Ks

Re: String theory and gravity new

[Re: deSitter]
#5631884 - 01/19/13 05:08 PM

I do believe Pess is onto something...the alternative Universe twine ball is unraveling and seeping into our Universe..that outta make for a good scientific "yarn"...

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Jarad
Postmaster

Reged: 04/28/03

Loc: Atlanta, GA

Re: String theory and gravity new

[Re: scopethis]
#5632401 - 01/19/13 11:00 PM

Now you're just trying to string us along...

Jarad

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scopethis
Postmaster

Reged: 05/30/08

Loc: Kingman, Ks

Re: String theory and gravity new

[Re: Jarad]
#5633300 - 01/20/13 02:07 PM

it's that term "fabric" of the Universe that is undefined..is it string, netting, some sort of mesh or webbing, or perhaps some large old discarded pelt from that neighboring Universe...

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EJN
Pooh-Bah

Reged: 11/01/05

Loc: Highway 61

Re: String theory and gravity new

[Re: scopethis]
#5633450 - 01/20/13 03:48 PM

Quote:

it's that term "fabric" of the Universe that is undefined..is it string, netting, some sort of mesh or webbing, or perhaps some large old discarded pelt from that neighboring Universe...

The fabric of the universe is 60% cotton and 40% polyester, and should only be
washed using the "permanent press" setting.

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Pess
(Title)

Reged: 09/12/07

Loc: Toledo, Ohio

Re: String theory and gravity new

[Re: EJN]
#5634548 - 01/21/13 09:22 AM

I left the Universe on the High-Heat setting too long.

Pesse (Scientists are set to announce that the Universe is now contracting.) Mist

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llanitedave
Humble Megalomaniac

Reged: 09/26/05

Loc: Amargosa Valley, NV, USA

Re: String theory and gravity new

[Re: Pess]
#5634888 - 01/21/13 12:41 PM

Was it an accident, or do you have a scorched universe strategy?

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