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Other Topics >> Science, Math, and Philosophy

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evank15
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Reged: 03/12/05
Posts: 800
Loc: Victoria, British Columbia

Re: My hair-brained theory of the week: Gravity [Re: arahant]
#8308275 - 12/06/06 02:32 AM

Quote:

(god i need to learn relativity).

GR is hard. Really hard. I think it's the hardest (at least up there) of the UG physics courses at my school. It's taught here by a guy who has co-authoured two books with Stephen Hawking.

http://en.wikipedia.org/wiki/Werner_Israel (for those interested and those who may have heard of him).

Anyways, very demanding material. You don't just wake up one day and say "I feel like learning GR today".

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John21
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Reged: 06/28/06
Posts: 1097

Re: My hair-brained theory of the week: Gravity [Re: Borodog]
#8308417 - 12/06/06 02:50 AM

I realize that the idea of expanding matter is a little unorthodox.

But honestly if you were looking at the situation from a blank slate would it be that much more bizarre than curved space? However, it would seem to produce the same perceived effects.

As near as I can understand Einstein, he was saying that an object moving in a straight line in his 4th dimension of space/time would appear to be following a curved path in our 3 dimensional perspective. So what if we substituted his space/time flowing through our 3 dimensions (which caused his gravity) for the expansion of matter? Wouldn't it seem to produce the same experienced effects?

I guess it would be like saying that the dimension of space/time that we are incapable of perceiving could be substitued for an expanding dimension of matter: a dimension we are relatively related to, because we're all expanding at the same rate, and hence incapable of objectively perceiving it - only experiencing its effects.

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John21
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Reged: 06/28/06
Posts: 1097

Re: My hair-brained theory of the week: Gravity [Re: Skidoo]
#8308667 - 12/06/06 03:22 AM

Quote:

A periodic orbit would be an "expansion" in a non-spatial dimension?

I'm thinking if you shot an arrow in a straight line in space/time the earth moving up to it would produce the appearance of an ellipse.

Now say you shot that arrow to the edge of the earth's circumference at a 90-degree angle: as it travels past the earth, both it and the earth are expanding. But with the angles it would appear to pull away from the earth even though the earth was expanding, due to the earth's curvature. So even though the arrow was traveling in a straight line it would appear to us to be in orbit (following the path of an ellipse).

(As you can tell, I haven't completely thought through the whole concept, just tinkering.)

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John21
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Reged: 06/28/06
Posts: 1097

Re: My hair-brained theory of the week: Gravity [Re: Kimbell175113]
#8309324 - 12/06/06 05:06 AM

Quote:

It's "hare-brained."

Alternate theory = alternate spelling?

The sad part is, after reading your quote, I looked up the spelling - it gave both. I was thinking all along it was hair in the brain - never made the connection to rabbits.

I promise to pay more attention in the future. I can't imagine how much different the world would be today if it was the spatial theory of relativity.

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thylacine
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Reged: 07/02/03
Posts: 1175

Re: My hair-brained theory of the week: Gravity [Re: John21]
#8312032 - 12/06/06 11:49 AM

John21's

Quote:

Subject: My hair-brained theory of the week: Gravity

Congratulations John21, you win the `most understated subject header of the year' award.

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oneeye13
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Reged: 09/10/03
Posts: 999

Re: My hair-brained theory of the week: Gravity [Re: John21]
#8312895 - 12/06/06 12:59 PM

pauli might say "it is not even wrong"

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FortunaMaximus
Carpal \'Tunnel

Reged: 05/12/06
Posts: 6606
Loc: Golden Horseshoe

Re: My hair-brained theory of the week: Gravity [Re: oneeye13]
#8313219 - 12/06/06 01:23 PM

Heh, and Pauli might not even be wrong in making that statement.

Here's the thing though, I did consider something similar a few years ago and ran into this problem. Space is expanding relative to our apparent size.

While that isn't enough to refute your theory on expansion of matter, John, when you consider that factor, it does turn it into a very improbable solution.

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Kimbell175113
Pooh-Bah

Reged: 10/11/06
Posts: 2464
Loc: The art of losing isn't hard t...

Re: My hair-brained theory of the week: Gravity [Re: FortunaMaximus]
#8316388 - 12/06/06 04:38 PM

Not to derail, but let me just say one more thing: the dictionary has both spellings because "hair" is an archaic way to spell "hare," from when "harebrained" became a word. Either way, it has nothing to do with hair and never has. Sorry, guys, I'm pretty sure I couldn't stop myself if I tried.

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JimNashe
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Reged: 11/12/04
Posts: 140
Loc: Donking it up @ 400NL

Re: My hair-brained theory of the week: Gravity [Re: Kimbell175113]
#8325830 - 12/07/06 09:15 AM

I had this idea as well when I was a young lad. Then I considered how the earth orbits around the sun, and how this wouldn't be possible using this theory so I dropped it again.

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John21
old hand

Reged: 06/28/06
Posts: 1097

Re: My hair-brained theory of the week: Gravity [Re: John21]
#8338905 - 12/08/06 02:43 AM

bump

After searching the web, I found a book that incorporates the idea of expanding matter (he calls it the expansion theory) called "The Final Theory: Rethinking our Scientific Legacy. http://www.amazon.com/Final-Theory-Rethi...TF8&s=books

I also ran across a 70 page forum discussion of the book on the hypography science forum here

If anyone's read the book I'd appreciate feedback.

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