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mbkennel
ChaoticOrder
We already know that energy and matter are the same thing
This is not meaningful in actual physics, any more than saying we know mass and 7 are the same thing.
Yes, any discreetness of spacetime would cause the speed of light to depend on wavelength (very high energy light would travel at nearly c, and lower energy light would travel at less than c). The difference in speeds is small, but when traveling for very long amounts of time (millions or billions of years), the difference in arrival times would be easily large enough to measure. But for astronomical sources, we see no such difference (very far away things don't look delayed compared to very close things).
The result does not necessarily strike a blow to quantum gravity. Only a subset of models predict the effect, and "while it seems reasonable to expect that the variation of the speed of light with energy is a sign of quantum space-time, there is no well developed theory of quantum space-time that cleanly makes this prediction," says Lee Smolin of the Perimeter Institute for Theoretical Physics in Waterloo, Canada.
Universe's quantum 'speed bumps' no obstacle for light
Moduli
Yes, any discreetness of spacetime would cause the speed of light to depend on wavelength (very high energy light would travel at nearly c, and lower energy light would travel at less than c). The difference in speeds is small, but when traveling for very long amounts of time (millions or billions of years), the difference in arrival times would be easily large enough to measure. But for astronomical sources, we see no such difference (very far away things don't look delayed compared to very close things).
You cant have it both ways; You cant say space is nothingness, and that energy/matter was created solely by space. You cant say space is nothingness, but can have properties such as curvature.
What do you think occurs at the forefronts of the universe, the edge, the boundry, energy interacting with a wall of infinite nothingness? this could possibly have a reverberating effect back through the system of the universe, maybe keeps the universe stable, and causes order.
Moduli
It's not a belief, it's a fact. It would be very obvious if there were any kind of discreteness to spacetime.
And it doesn't make sense to say "the same infinite as if...". It's true that there are an infinite number of numbers between any two numbers. But the distance is the meaningful metric to use, and that's obviously different for different points.
spartacus699
small is the new big!
Remember!
Bedlam
reply to post by ImaFungi
There are an infinite number of points in any length or volume. It doesn't matter.
If you figure that out, explain it to me.
ImaFungi
reply to post by Arbitrageur
Ok well that image is certainly a wave, the term particle then refers to '1 wave'. The problem then is describing 'what exactly and actually is it, that is waving'?
ImaFungi
No in the nature of numbers there are infinites between 2 abstract points 1 -------------2 . But in reality there is no evidence that there is infinite amount of space, or potentially infinite amount of points (means the same thing) between two points.