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Messages - Mike Gale

Pages: [1]
1
Physics, Astronomy & Cosmology / Re: Can matter penetrate the event horizon?
« on: 02/08/2017 17:13:30 »
Interaction between positive and negative masses: https://en.wikipedia.org/wiki/Negative_mass#Runaway_motion
The following users thanked this post: evan_au

2
Physics, Astronomy & Cosmology / Re: Do black holes affect gravity wave propagation?
« on: 01/05/2017 06:09:01 »
Absolutely. Gravity waves would be subject to the same distortions as light waves. The problem is that they are diabolically hard to detect and we don't have the technology to triangulate them yet.
The following users thanked this post: chris

3
New Theories / Re: What is the ''speed'' of ''time''?
« on: 07/04/2017 02:26:47 »
Quote from: Thebox on 05/04/2017 01:25:06
Putting it in easy perspective, you can observe the ''empty'' space in a box or you would not know it was ''empty''.
Observing the wall of the box tells you nothing about the intervening space. Space could be curled up seven ways from Sunday; you'd never know the difference because light follows the curvature of space. The only way to determine if the box is empty is to measure its mass.
The following users thanked this post: Alex Dullius Siqueira

4
New Theories / Re: What is the ''speed'' of ''time''?
« on: 01/04/2017 03:53:14 »
I have indeed read the other posts and I realize this discussion has devolved into speculation about the nature of time and and absolute reference frames. My point is that the answer to the question posed in the title is trivial and the real question is how do my seconds differ from yours. SR answers that question, but it doesn't address the question of why. You can speculate all day about that and believe what you like. Maybe it's turtles all the way down. It won't make a shred of difference because it won't change any of the observables or the manner in which they are related.
Goc has misconstrued the concept of unambiguous measurements. It does not equate to an absolute reference frame. It simply means that a measurement made in one context can be reliably transposed to another. It requires a common factor, which is light speed in the case of SR.
I might add that any serious discussion about the nature of time must address the relationship between entropy and the arrow of time. Sean Carroll does a bang up job of that in his book From Eternity to Here.
The following users thanked this post: Ethos_

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