Author Topic: Is This Geometric Structure The Theory Of Everything?  (Read 1724 times)

Re: Is This Geometric Structure The Theory Of Everything?
« Reply #30 on: August 12, 2018, 07:10:20 AM »
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Yeah, I know about light being slowed down through various media and all that.  My question is WHY gravity takes any time to operate.  And just saying lightspeed is "the limit" doesn't work.  Until we know how gravity really works, we can't tell the speed.

Look at the observations.   If gravity waves were detected before an event, then they'd be travelling faster than light.  If they arrive a bit later, then they would be slower.   If they arrive at the same time then the gravitational waves must be travelling at the same speed as the light from the event they correlate to.
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Offline Cavebear

Re: Is This Geometric Structure The Theory Of Everything?
« Reply #31 on: August 12, 2018, 07:47:16 AM »
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Look at the observations.   If gravity waves were detected before an event, then they'd be travelling faster than light.  If they arrive a bit later, then they would be slower.   If they arrive at the same time then the gravitational waves must be travelling at the same speed as the light from the event they correlate to.

So what evidence is there that they travel faster slower or equal to light?
Atheist born, atheist bred.  And when I die, atheist dead!

Offline Baruch

Re: Is This Geometric Structure The Theory Of Everything?
« Reply #32 on: August 12, 2018, 08:30:49 AM »
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So what evidence is there that they travel faster slower or equal to light?

Very hard to empirically prove, since there are so few observations so far, and the early ones were black hole mergers which wouldn't produce much EM radiation ... but a year ago ...

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Offline trdsf

Re: Is This Geometric Structure The Theory Of Everything?
« Reply #33 on: August 12, 2018, 03:02:10 PM »
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So what evidence is there that they travel faster slower or equal to light?
You are not allowed to view links. Register or Login β€” the detection of gravitational waves let us determine their speed, and it's c.
Sir Terry Pratchett, on being told about the theory that the universe is a computer simulation: "If we all get out and in again, would it start to work properly this time?"

Re: Is This Geometric Structure The Theory Of Everything?
« Reply #34 on: August 12, 2018, 05:22:24 PM »
We may soon be able to use stars as gravity wave detectors:


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Offline Baruch

Re: Is This Geometric Structure The Theory Of Everything?
« Reply #35 on: August 12, 2018, 10:34:13 PM »
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We may soon be able to use stars as gravity wave detectors:


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Maybe.  "acoustic spectra of these stars" ... if it weren't for the vacuum of space, the roar of the sun, not just the light, would deafen us all.
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Offline SGOS

Re: Is This Geometric Structure The Theory Of Everything?
« Reply #36 on: August 18, 2018, 08:02:28 PM »
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My senior year in high school I was taking a speech class, where the class brain and nerd explained how to visualize the 4th geometrical dimension.  He started with a 2 dimensional picture of a simple cube that we immediately can see represents a 3 dimensional object. 



Then went on and showed us his three dimensional model of the cube he made out of balsa wood sticks.  He surrounded the cube with more sticks going out wildly from the 8 vertices and joining together into a complicated visualization of how we could visualize the 4th dimension in 3d, just as we visualize the third dimension in 2d.

The drawings in this thread are way more complicated than his model because he stopped at the fourth dimension.  But he did explain how further modeling could theoretically represent an infinite number of dimensions all occupying the same space.

Here is something I just blundered onto on the Internet.  Carl Sagan explains the 4 dimensional cube and shows one to you, the exact representation I tried to describe from 123 Infinity, and it even has a name.  Shades of Marvel's Thor and the Avengers, it's the Tesseract

I guess Stan Lee doesn't just make up names out of thin air for his science/mythological gizmos.

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Re: Is This Geometric Structure The Theory Of Everything?
« Reply #37 on: August 18, 2018, 08:08:13 PM »
The first time I ever heard of a tesseract was when I read the book You are not allowed to view links. Register or Login.

Quote
In the novel, Mrs. Whatsit explains that if we understand space to be three-dimensional, and time represents a fourth dimension, then the tesseract is a fifth-dimensional bridge between two points in time and space. ... A tesseract is the literal β€œwrinkle in time” from the title, which is also a wrinkle in space.
« Last Edit: August 18, 2018, 08:09:53 PM by Unbeliever »
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"In life, unlike chess, the game continues after checkmate."
Isaac Asimov

Offline SGOS

Re: Is This Geometric Structure The Theory Of Everything?
« Reply #38 on: August 18, 2018, 08:12:22 PM »
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The first time I ever heard of a tesseract was when I read the book You are not allowed to view links. Register or Login.

You will always be 6 steps ahead of me :-)

Re: Is This Geometric Structure The Theory Of Everything?
« Reply #39 on: August 18, 2018, 08:23:29 PM »
Yeah, that's why I so often trip over my own feet.
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"In life, unlike chess, the game continues after checkmate."
Isaac Asimov

Offline Cavebear

Re: Is This Geometric Structure The Theory Of Everything?
« Reply #40 on: August 27, 2018, 01:11:26 AM »
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Yeah, that's why I so often trip over my own feet.

Well, if you put a foot into a tesseract, you never know where it will end up.

But seriously, I have a slight thought that we may be slowly improving our concepts of spacetime to begin to begin to grasp tesseracts and 4th dimensions.  We are doing it in maths.  Whatever becomes usual to the next generations will be easier for them to accept and deal with.
Atheist born, atheist bred.  And when I die, atheist dead!

Offline trdsf

Re: Is This Geometric Structure The Theory Of Everything?
« Reply #41 on: August 27, 2018, 02:03:05 AM »
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Well, if you put a foot into a tesseract, you never know where it will end up.

But seriously, I have a slight thought that we may be slowly improving our concepts of spacetime to begin to begin to grasp tesseracts and 4th dimensions.  We are doing it in maths.  Whatever becomes usual to the next generations will be easier for them to accept and deal with.
So you're ready for You are not allowed to view links. Register or Login, then?  XD
Sir Terry Pratchett, on being told about the theory that the universe is a computer simulation: "If we all get out and in again, would it start to work properly this time?"

Offline Cavebear

Re: Is This Geometric Structure The Theory Of Everything?
« Reply #42 on: August 27, 2018, 02:26:34 AM »
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So you're ready for You are not allowed to view links. Register or Login, then?  XD

Soon as I solve the 3D one (any day now for sure).  At least I couldn't do much worse.  The problem might be that the 4d Rubic's cube has 2 colors I can't see without my "special" glasses.
Atheist born, atheist bred.  And when I die, atheist dead!

Re: Is This Geometric Structure The Theory Of Everything?
« Reply #43 on: August 27, 2018, 03:25:17 PM »
Even Rubik, the guy who created the original cube, took 3 months to solve it. I cheated, and went to youtube to learn how. They didn't have youtube when he invented it, or I'm sure he would have too...
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"In life, unlike chess, the game continues after checkmate."
Isaac Asimov

Offline Cavebear

Re: Is This Geometric Structure The Theory Of Everything?
« Reply #44 on: August 27, 2018, 03:30:00 PM »
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Even Rubik, the guy who created the original cube, took 3 months to solve it. I cheated, and went to youtube to learn how. They didn't have youtube when he invented it, or I'm sure he would have too...

I went to youtube and I still can't solve it.  It actually annoys me more than Baruch does.  And I have great spatial talent.  I must have a defective cube. 
Atheist born, atheist bred.  And when I die, atheist dead!

 

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