Knyte, on 07 October 2010 - 01:33 PM, said:
I always thought of gravity as an effect of matter size and density, not a force. If gravity was a force, then it would be present in all areas of physics. Yet, if memory serves, Quantum mechanics is predominanly dominated by the forces of Electromagnetism, and the Strong and Weak Nuclear Forces. But..um...using your analogy about a bowling ball and a rubber mat substituting for a mass object and space-time, respectively, isn't that an answer to "why does matter bend space-time"?
No. Knowing that the rubber mat contorts per the mass of the bowling ball is not the same as understanding the intrinsic properties of the mat that allow it to stretch in such a manner, though it is a hint. Gravity is also present in all areas of physics sans those dealing with spacetime on distances smaller than the Planck length, at which point we are not even sure that existence "exists" anymore.
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Matter bends space-time because its density is greater, and surface area is smaller, then space-time itself. This relation corresponds on all 3 dimensions that we know of: X, Y, Z. Time is our 4th dimension, yet it is situated somewhat outside the X, Y, Z coordinates. Kind of like encasing it in a bubble. If you were to walk outside the bubble, you would see a continuous line..almost like a gigantic length sausage being constantly exstruded with no twisting ties...alteast that we know of.
Time is not situated outside of three-dimensional space. Time and space are the same entity. It is biological, intuitive limitation alone that forces us to isolate the two. Were you outside the "bubble", there would be no neat line.
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"It is always easier to understand the unknown, for the known will always contradict what we percieve to be true." - Knyte, circa 2006
I prefer this one, myself:
"Quoting oneself defeats the purpose of tritely incoherent Buddhist proverbs as per the asinine egotism inherent in the act." -Firefeng, circa right fucking now.
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