Free Republic
Browse · Search
News/Activism
Topics · Post Article

Skip to comments.

Moving mirrors make light from nothing
Nature News ^ | 3 June 2011 | Geoff Brumfiel

Posted on 06/03/2011 11:58:13 AM PDT by neverdem

Researchers claim to have produced sought-after quantum effect.

A team of physicists is claiming to have coaxed sparks from the vacuum of empty space1. If verified, the finding would be one of the most unusual experimental proofs of quantum mechanics in recent years and "a significant milestone", says John Pendry, a theoretical physicist at Imperial College London who was not involved in the study.

The researchers, based at the Chalmers University of Technology in Gothenburg, Sweden, will present their findings early next week at a workshop in Padua, Italy. They have already posted a paper on the popular pre-print server arXiv.org, but have declined to talk to reporters because the work has not yet been peer-reviewed. High-profile journals, including Nature, discourage researchers from talking to the press until their findings are ready for publication.

Nevertheless, scientists not directly connected with the group say that the result is impressive. "It is a major development," says Federico Capasso, an experimental physicist at Harvard University in Cambridge, Massachusetts, who has worked on similar quantum effects.

At the heart of the experiment is one of the weirdest, and most important, tenets of quantum mechanics: the principle that empty space is anything but. Quantum theory predicts that a vacuum is actually a writhing foam of particles flitting in and out of existence.

The existence of these particles is so fleeting that they are often described as virtual, yet they can have tangible effects. For example, if two mirrors are placed extremely close together, the kinds of virtual light particles, or photons, that can exist between them can be limited. The limit means that more virtual photons exist outside the mirrors than between them, creating a force that pushes the plates together. This 'Casimir force' is strong enough at short distances for scientists to physically measure...

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


TOPICS: Culture/Society; News/Current Events; Technical
KEYWORDS: casimirforce; physics; quantummechanics
Navigation: use the links below to view more comments.
first previous 1-2021-4041-47 next last
To: Covenantor

Thanks, few “get it” and fewer still see the humor.


21 posted on 06/03/2011 12:39:53 PM PDT by Repeal The 17th (Proud to be a (small) monthly donor.)
[ Post Reply | Private Reply | To 18 | View Replies]

Comment #22 Removed by Moderator

To: mad_as_he$$

EXACTLY!


23 posted on 06/03/2011 12:41:46 PM PDT by Repeal The 17th (Proud to be a (small) monthly donor.)
[ Post Reply | Private Reply | To 20 | View Replies]

To: Repeal The 17th

I’m still laughing.

Is it your work?

I’m ready to send it winging out and would like to know the author. FR mail me if you want a cut out between authorship and FR I’d.

Just too damn good to be anon.
;>)


24 posted on 06/03/2011 12:49:25 PM PDT by Covenantor ("Men are ruled...by liars who refuse them news, and by fools who cannot govern." Chesterton)
[ Post Reply | Private Reply | To 21 | View Replies]

To: 668 - Neighbor of the Beast

“Let there be light!”
Always wondered. So...it’s all done with mirrors?

Probably some smoke in there too.


25 posted on 06/03/2011 12:53:27 PM PDT by Chickensoup (The right to bear arms is proven to prevent government genocide. Protect yourself!)
[ Post Reply | Private Reply | To 3 | View Replies]

To: Covenantor

Not my work; stolen from:
http://holyjoe.org/poetry/adams.htm

apparently the author is someone named Cecil Adams...
http://www.straightdope.com/pages/faq/cecil


26 posted on 06/03/2011 12:54:47 PM PDT by Repeal The 17th (Proud to be a (small) monthly donor.)
[ Post Reply | Private Reply | To 24 | View Replies]

To: Sacajaweau
Man can not "create".

Man is soooo vain!!

Man doesn't create. Man discovers what already exists.

27 posted on 06/03/2011 12:59:28 PM PDT by Isabel C.
[ Post Reply | Private Reply | To 11 | View Replies]

To: neverdem

Where did they get the mirror’s from? nuff said ...


28 posted on 06/03/2011 1:01:32 PM PDT by Scythian
[ Post Reply | Private Reply | To 1 | View Replies]

To: Repeal The 17th

No more rhymes now, I mean it!


29 posted on 06/03/2011 1:15:50 PM PDT by NativeSon
[ Post Reply | Private Reply | To 16 | View Replies]

To: neverdem

LMAO and making light of the situation


30 posted on 06/03/2011 1:34:49 PM PDT by bunkerhill7
[ Post Reply | Private Reply | To 1 | View Replies]

To: El Gato; Ernest_at_the_Beach; Robert A. Cook, PE; lepton; LadyDoc; jb6; tiamat; PGalt; Dianna; ...
Eating dirt can be good for the belly, researchers find

Color Red Increases the Speed and Strength of Reactions

DNA Sequence Yields Clues to Germany's 'Super Toxic' E. coli outbreak

New Superbug Found in Cows and People

FReepmail me if you want on or off my health and science ping list.

31 posted on 06/03/2011 1:43:43 PM PDT by neverdem (Xin loi minh oi)
[ Post Reply | Private Reply | To 1 | View Replies]

To: RobRoy

Those theories are similar to the ideas put forward by Puthoff and Sakharov, that gravity is the observable effect of the quantum background pushing matter around.

And they fit in well with my equations from back when I tinkered with it, and the Expansive Non-decelerative Universe papers published by Sima, Sukenik.

Thing is, if somebody accepts those ideas and dumps old Al, you come to understand why gravity is a local phenomena, and at the same time the need for dark matter and dark energy to explain things just falls away. Thermodynamic pressure of the quantum field explains everything.


32 posted on 06/03/2011 2:16:03 PM PDT by djf ("Life is never fair...And perhaps it is a good thing for most of us that it is not." Oscar Wilde)
[ Post Reply | Private Reply | To 6 | View Replies]

To: mad_as_he$$
Great article. And finally I understand the portable hole!


33 posted on 06/03/2011 2:35:48 PM PDT by RobRoy (The US today: Revelation 18:4)
[ Post Reply | Private Reply | To 20 | View Replies]

To: RobRoy

Don’t get me going....


34 posted on 06/03/2011 2:43:26 PM PDT by mad_as_he$$ ("If I ever kill you, you'll be awake. You'll be facing me, and you'll be armed. " Mal Reynolds)
[ Post Reply | Private Reply | To 33 | View Replies]

To: neverdem

Did George Watson have anything to do with this? :o)


35 posted on 06/03/2011 2:59:30 PM PDT by editor-surveyor (Going 'EGYPT' - 2012!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: stuartcr

If you reverse polarize an LED, will it produce an absence of LED.


36 posted on 06/03/2011 3:02:06 PM PDT by editor-surveyor (Going 'EGYPT' - 2012!)
[ Post Reply | Private Reply | To 15 | View Replies]

To: Repeal The 17th

“I have noticed that while they are sucking up dark, if something blocks them, they leave a ‘shadow’ of dark behind.”

Of course. The darkness would like to, but cannot, get by the object.


37 posted on 06/03/2011 3:30:20 PM PDT by ModelBreaker
[ Post Reply | Private Reply | To 12 | View Replies]

To: ModelBreaker

You will notice that when the light bulb is switched off, the darkness returns.
The bulb does not emit light, it sucks up dark.
If the bulb was emitting light,
then when you switch it off, where does the light go?
They do not emit light, they suck up dark.
That is why when you turn them off, the darkness returns.


38 posted on 06/03/2011 3:54:39 PM PDT by Repeal The 17th (Proud to be a (small) monthly donor.)
[ Post Reply | Private Reply | To 37 | View Replies]

To: DownInFlames
A good quetion. This has been dealt with in popular science fiction. The trick is you begin sucking energy out of the vacuum and it runs wild, something comes with it, you get burned, it's a pathway to hell, it takes over this end of the galaxy, there's a sun on the other side, it's really cold, and so on.

It probably does have some future as a heat source for boiling water (to make steam to drive dynamos to run industry and stuff).

39 posted on 06/03/2011 5:01:19 PM PDT by muawiyah
[ Post Reply | Private Reply | To 2 | View Replies]

To: DownInFlames
A good quetion. This has been dealt with in popular science fiction. The trick is you begin sucking energy out of the vacuum and it runs wild, something comes with it, you get burned, it's a pathway to hell, it takes over this end of the galaxy, there's a sun on the other side, it's really cold, and so on.

It probably does have some future as a heat source for boiling water (to make steam to drive dynamos to run industry and stuff).

40 posted on 06/03/2011 5:01:26 PM PDT by muawiyah
[ Post Reply | Private Reply | To 2 | View Replies]


Navigation: use the links below to view more comments.
first previous 1-2021-4041-47 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
News/Activism
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson