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Dark matter could be seen in GPS time glitches
New Scientist ^ | November 17, 2014 | Hal Hodson

Posted on 11/19/2014 4:56:35 AM PST by 2ndDivisionVet

GPS has a new job. It does a great job of telling us our location, but the network of hyper-accurate clocks in space could get a fix on something far more elusive: dark matter.

Dark matter makes up 80 per cent of the universe's matter but scarcely interacts with ordinary matter. A novel particle is the most popular candidate, but Andrei Derevianko at the University of Nevada, Reno, and Maxim Pospelov at the Perimeter Institute in Waterloo, Ontario, Canada propose that kinks or cracks in the quantum fields that permeate the universe could be the culprit.

If they are right, fundamental properties such as the mass of an electron or the strength of electromagnetic fields would change at the kinks. "The effect is essentially locally modifying fundamental constants," Derevianko says. Clocks would be affected too, measuring time slightly differently as a result.

Unique signature

That's where GPS comes in. The network of satellites is about 50,000 kilometres in diameter, and is travelling through space – along with the entire solar system – at about 300 kilometres a second. So any time shift when the solar system passes through a cosmic kink will take a maximum of 170 seconds to move across network.

Other things could perturb GPS timekeeping, but only a signal from dark matter would have that signature, say Derevianko and Pospelov....

(Excerpt) Read more at newscientist.com ...


TOPICS: Computers/Internet; Science
KEYWORDS: astrophysics; darkmatter; framedragging; gps; physics; stringtheory; thomasvanflandern; tvf

1 posted on 11/19/2014 4:56:35 AM PST by 2ndDivisionVet
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To: 2ndDivisionVet

I never got far enough into physics to comprehend dark matter, other than it seemed to be a “convenience” to account for “missing” matter to account for the gravitational forces needed, by calculation, to hold galaxies together.

As such, thinking back to the physics I did have (perhaps demonstrating I only know enough to screw things up) I wonder about the 19th century classical concept of the “ether”.

The ether was supposed to be the medium on which electromagnetic waves propagate. When physicists determined that light was just an electromagnetic wave, they wondered how, as a wave, it managed to propagate through space (vacuum) since other waves, like sound or water, needed a medium. So, they figured there was a mysterious “ether” that served this purpose.

They ultimately rejected this concept and basically said that light needs no medium on which to propagate.

So I wonder: is it possible that the old dudes were right and that the ether exists and it is made of dark matter?


2 posted on 11/19/2014 5:32:58 AM PST by fruser1
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To: fruser1

I’ve pondered the parallels between dark matter/dark energy and ether theories myself. Went to school at CWRU and was there on the anniversary of Michelson-Morley’s failed experiment to detect ether. After a few beers, more than a few of us went through the mental exercise of wondering if they had screwed up the experiment and what if ether really did exist...

Never occurred to me that dark matter and ether might be one in the same, but it’s an interesting idea.

I don’t know enough about the theories to have an opinion, but I suspect dark matter is way to simple and convenient an answer. The real answer is likely going to be surprising, strange and unexpected and will likely lead to even more questions than it answers.


3 posted on 11/19/2014 5:51:59 AM PST by chrisser (When do we get to tell the Middle East to stop clinging to their guns and religion?)
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To: 2ndDivisionVet

As far as I’m concerned ,dark matter presently resides in the WH.


4 posted on 11/19/2014 6:43:26 AM PST by peteyd (A dog may bite you in the ass,but it will never stab you in the back.)
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To: fruser1
I never got far enough into physics to comprehend dark matter...

Don't even try. It's BS. I see it as a mathematical construct created by certain eggheads to help solve their equations and explain their failures to see the Hand of God at work in the cosmos. And all the other boobs like deGrasse Tyson merrily follow along saying, "Oh yeah! That MUST be it!"

5 posted on 11/19/2014 6:51:20 AM PST by Bloody Sam Roberts (Laws that forbid the carrying of arms disarm only those who are not inclined to commit crimes.)
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To: chrisser

I’ve pondered the parallels between dark matter/dark energy and ether theories myself. Went to school at CWRU and was there on the anniversary of Michelson-Morley’s failed experiment to detect ether. After a few beers, more than a few of us went through the mental exercise of wondering if they had screwed up the experiment and what if ether really did exist...

...

The experiment isn’t difficult by today’s standards and has been repeated many times. All of the successful predictions of relativity also confirm the results.


6 posted on 11/19/2014 6:55:01 AM PST by Moonman62 (The US has become a government with a country, rather than a country with a government.)
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To: fruser1

They ultimately rejected this concept and basically said that light needs no medium on which to propagate.

...

Einstein was the one who said it, and his successful version of relativity was the result. And he just didn’t say it, experiments demonstrated it.


7 posted on 11/19/2014 6:58:30 AM PST by Moonman62 (The US has become a government with a country, rather than a country with a government.)
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To: peteyd

That’s half-dark matter.


8 posted on 11/19/2014 7:00:03 AM PST by John W (Al Gore Global Warming King frozen stiffer)
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To: 2ndDivisionVet
When the second sentence in an article says.... "Dark matter makes up 80 per cent of the universe's matter ".... I pretty much move on to something else.
9 posted on 11/19/2014 7:01:33 AM PST by kjam22 (my music video "If My People" at https://www.youtube.com/watch?v=74b20RjILy4)
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To: Moonman62; chrisser

Nice wiki link on this subject, including Einstein. I had never actually googled this subject before.

http://en.wikipedia.org/wiki/Aether_theories


10 posted on 11/19/2014 7:10:20 AM PST by fruser1
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To: fruser1
So I wonder: is it possible that the old dudes were right and that the ether exists and it is made of dark matter?

Modern science's most popular equation is: actual_results = expected_results x kluge_factor

There are many Kluge factors at work in the multi-billion dollar global warming industry. The idea of dark matter is a huge Kluge factor.

It's starting to look like Newton and Einstein may have been closer to the truth all along. A very interesting physics article worth a read is: Fluid Tests Hint at Concrete Quantum Reality

11 posted on 11/19/2014 7:22:46 AM PST by Reeses
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To: 2ndDivisionVet

Dark Matter and Dark Energy seem to be the wheels within wheels devised to continue to prop up the rotten old mythology in the face of the new Copernicus.


12 posted on 11/19/2014 7:32:28 AM PST by arthurus
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To: 2ndDivisionVet

I do not believe that GPS satellites actually have on-board atomic clocks. Might be wrong, but I’d be surprised if they do.


13 posted on 11/19/2014 8:28:41 AM PST by zeugma (The act of observing disturbs the observed.)
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To: fruser1

I have “The Radio Handbook, First Edition, First Printing” from 1935 that still claims that radio waves (and light/other waves) use “the ether” as a propagation medium.


14 posted on 11/19/2014 8:38:13 AM PST by Nowhere Man (Mom I miss you! (8-20-1938 to 11-18-2013) Cancer sucks)
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To: Bloody Sam Roberts

Michio Kaku was a theoretically physicist at one time. He basically admitted that at one point he realized you get a massive divide by zero error as you consider things like black holes, or the total amount of matter in the Universe.

Then he left. He’s making more money now too.

I like him, in that he subscribes to Feynman and Jacques Barzun’s position that a real scientist can make the universe available to regular people.

It had nothing to do with being egalitarian. If you understand the universe, really understand it, you should be able to explain it to a reasonably prudent person.

Feynman was on the blue ribbon panel examining the Challenger explosion. Lots of politics, and lots of arguing.

Feynman knew it came down to the gaskets. Said that they weren’t rated for the cold weather that was present at the launch.

They began to shout him down. He had obtained a gasket. Rather than say a word, he put the gasket into the pitcher of ice water that they gave the panelists. He waited a minute, then took the gasket out. Brittle, it basically came apart in his hand.

End of discussion. That’s a scientist - just go out and prove it. Design an experiment and prove your theory.


15 posted on 11/19/2014 8:51:04 AM PST by RinaseaofDs
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To: RinaseaofDs

Einstein said, “If you can’t explain it simply, you don’t understand it well enough.”


16 posted on 11/19/2014 9:40:38 AM PST by HandyDandy (Don't make-up stuff. It just wastes everybody's time.)
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To: 2ndDivisionVet
"Dark Matter" and "Dark Energy" are placeholders in Physics for "We don't really know yet, but we can tell something is there."

So, how can they tell "something" is there? By observing the effects from the unseen agent. There are simple examples in the everyday world. You see a flag fluttering. You see leaves rustling. You see fields of grass waving. You see all the EFFECTS of wind, but you do not see the WIND itself.

So, what effects are seen from the "invisible" Dark Matter? Well, there are 2 that readily come to mind:

(1) The measured spin of distant galaxies seems to be too fast for the visible matter measured. There needs to be more "stuff" there holding it together. So, either the spin measurements are wrong, or the mass measurements are wrong, or the equations for gravity are wrong. If you check and recheck each one, eventually you must conclude that there is stuff there you can't see.

(2) The presence of mass in space causes it to curve. Enough mass will bend space enough to produce an effect called "gravitational lensing". From the amount of the bend, you can calculate the amount of "stuff" needed to produce it. So, when you find areas exhibiting gravitational lensing in telescopic images, you run the numbers and come to the conclusion that there must be more stuff there than you can see to produce the effect, or Einstein's relativity equations are wrong.

"Dark Energy" is the name for the force that seems to make empty space "springy". Why should empty space even "want" to flatten out and "expand"? You can measure the effects on a large scale (Galactic Red Shifts) and on a small scale (Quantum Vacuum Energy Effects) but what is causing that? Well, some "Dark Energy". Again, a placeholder for "I don't know".
17 posted on 11/19/2014 12:54:56 PM PST by Rebel_Ace (My wife told me to update my tag, so I did.)
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To: 6SJ7; AdmSmith; AFPhys; Arkinsaw; allmost; aristotleman; autumnraine; bajabaja; ...
Thanks 2ndDivisionVet.


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18 posted on 11/19/2014 2:48:42 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______________________Celebrate the Polls, Ignore the Trolls)
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