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Old 12-20-2007   #1 (permalink)
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gravity

heard about this likeness of gravity, does it make sense to you?

space = ocean water

matter = an air bubble

under pressure the air bubble is compressed.

wtf?
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Old 12-20-2007   #2 (permalink)
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Re: gravity

No, it doesn't make sense to me.

A better way of envisioning gravity is to take a piece of fabric and pull it tight. Now place a marble on this sheet. The depression formed by the marble is a good visualization of gravity. It's the best I've found and is a good illustration of Einstein's (and others) views on "curved" space-time.


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Old 12-20-2007   #3 (permalink)
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Re: gravity

Quote:
Originally Posted by vasquez View Post
heard about this likeness of gravity, does it make sense to you?

space = ocean water

matter = an air bubble

under pressure the air bubble is compressed.

wtf?
I think a good analogy will fit into the old saying:
matter tells space how to curve and curved space tells matter how to move

if we substitute:
space = ocean water and matter = an air bubble we get:

Air bubbles tell ocean water how to curve and curved ocean water tells air bubbles how to move. That seems pretty senseless. Trying freeztar's:

marble = matter, sheet = space

the marble tells the sheet how to curve and the curved sheet tells the marble how to move

much better that


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Old 12-20-2007   #4 (permalink)
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Re: gravity

who knows?
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