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Physicists Tied Laser Beams into Knots
space.com ^ | August 6, 2018 10:37am ET | Rafi Letzter, Live Science Staff Writer |

Posted on 08/06/2018 11:02:50 AM PDT by BenLurkin

The knots in question, the researchers wrote in their paper, were visible enough in images of the light wave data for them to identify the figure eights and toruses.

...

To create the knots, the researchers carefully tuned the up-and-down and side-to-side wave motion (the polarization) of two beams of light, partly using technology not unlike that found in polarized sunglasses. The knots formed around "polarization singularities" where the beams intersected, places where the side-to-side and up-and-down wavelengths were exactly equal, and a number of other wavelengths of light looped around them. At those points, light bent in the way the researchers wanted.

"We are all familiar with tying knots in tangible substances...," Mark Dennis, a University of Bristol physicist...said in the statement. "With light, however, things get a little more complex. It isn't just a single thread-like beam being knotted, but the whole of the space or 'field' in which it moves."

Dennis and his co-authors were interested in the topology, or the complex mathematical shaping, of that space. They found that the light formed more gaps when it knotted than expected, leaving spaces without significant energy from the beams.

Down the road, the researchers said, they hope to develop even more complex light knots; they hope this technology will speed the development of more precisely-tuned light sources.

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


TOPICS: Science
KEYWORDS: alanparsonsproject; doctorevil; frickinlaserbeams; knots; laserbeams; markdennis; stringtheory; uofbristol

1 posted on 08/06/2018 11:02:50 AM PDT by BenLurkin
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To: BenLurkin

There is a very special Boy Scout badge for this.


2 posted on 08/06/2018 11:06:32 AM PDT by ClearCase_guy (The MSM is in the business of creating a fake version of reality for political reasons.)
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To: BenLurkin
Already been done...


3 posted on 08/06/2018 11:07:53 AM PDT by PetroniusMaximus
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To: BenLurkin

They’ve never heard the advice “Don’t cross the streams.”?


4 posted on 08/06/2018 11:08:07 AM PDT by Wissa ("Accidents don't happen to people who take accidents as a personal insult." - Michael Corleone)
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To: BenLurkin

Do not cross the streams — Egon.


5 posted on 08/06/2018 11:10:52 AM PDT by TianaHighrider (Speak the TRUTH and SHAME the devil! * Fight SPEECH/MIND control *)
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To: Wissa

Darn, long nails and phone keyboards! Slows me down.


6 posted on 08/06/2018 11:13:49 AM PDT by TianaHighrider (Speak the TRUTH and SHAME the devil! * Fight SPEECH/MIND control *)
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To: BenLurkin
I hate it when my schwatrz gets twisted

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7 posted on 08/06/2018 11:14:53 AM PDT by JohnBrowdie
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To: BenLurkin; 6SJ7; AdmSmith; AFPhys; Arkinsaw; allmost; aristotleman; autumnraine; bajabaja; ...
The mutated sea bass are in a tank in the lab nextdoor. Thanks BenLurkin.

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8 posted on 08/06/2018 11:23:24 AM PDT by SunkenCiv (www.tapatalk.com/groups/godsgravesglyphs/, forum.darwincentral.org, www.gopbriefingroom.com)
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To: BenLurkin
"We are all familiar with tying knots in tangible substances such as shoelaces or ribbon," Mark Dennis, a University of Bristol physicist and author on the paper, said in the statement. "With light, however, things get a little more complex. It isn't just a single thread-like beam being knotted, but the whole of the space or 'field' in which it moves."

That is very weird to try and visualize/think about.
9 posted on 08/06/2018 11:30:01 AM PDT by Jamestown1630 ("A Republic, if you can keep it.")
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To: TianaHighrider

“I’m fuzzy on the whole good/bad thing” Peter Venkman


10 posted on 08/06/2018 11:36:20 AM PDT by shotgun ( .)
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To: BenLurkin
So the expression "Straight as a Laser Beam" is no longer valid?

11 posted on 08/06/2018 11:50:36 AM PDT by BitWielder1 (I'd rather have Unequal Wealth than Equal Poverty.)
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To: BitWielder1

12 posted on 08/06/2018 11:53:09 AM PDT by BenLurkin (The above is not a statement of fact. It is either satire or opinion. Or both.)
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To: BenLurkin

Sounds like alot of hype about virtually nothing as written

‘knots’ ???

Yes light will form points where reinforced amplitude are present (when the phase of light through that small area is in the same direction by the photons passing through) — assuming you then put a measuring instrument right there . The dark spots are where the phase of photons present cancel each other out (again - to the observer).

This has been know for 100 years ? (easy to demonstrate with the multiple slit experiment with a prism to select a limited frequencies - done in physics 101 optics lab experiments)

So are they saying that such points have an effect on other photons passing near those points ? Why not say that if its what they infer they have done?

Rather more likely its : some variation of the effect mentioned above and just a way better control it and maybe be use to calibrate optical equipment or somesuch.


13 posted on 08/06/2018 1:22:25 PM PDT by elbook
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To: BenLurkin

Every occasion of this should be documented under “Leftist Lies/Fraud/Dishonesty/Censorship/DAta Manipulation” in Conservapedia

https://en.wikipedia.org/wiki/Conservapedia

BOYCOTT Wikipedia for their abuse of the truth


14 posted on 08/06/2018 1:30:04 PM PDT by elbook
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