ZPE_Logo
  
Search        
  Create an account Home  ·  Topics  ·  Downloads  ·  Your Account  ·  Submit News  ·  Top 10  
Mission Statement

Modules
· Home
· Forum
· LATEST COMMENTS
· Special Sections
· SUPPORT ZPEnergy
· Advertising
· AvantGo
· Books
· Downloads
· Events
· Feedback
· Link to us
· Private Messages
· Search
· Stories Archive
· Submit News
· Surveys
· Top 10
· Topics
· Web Links
· Your Account

Who's Online
There are currently, 112 guest(s) and 0 member(s) that are online.

You are Anonymous user. You can register for free by clicking here

Events

Hot Links
Aetherometry

American Antigravity

Closeminded Science

EarthTech

ECW E-Cat World

Innoplaza

Integrity Research Institute

New Energy Movement

New Energy Times

Panacea-BOCAF

RexResearch

Science Hobbyist

T. Bearden Mirror Site

USPTO

Want to Know

Other Info-Sources
NE News Sites
AER_Network
E-Cat World
NexusNewsfeed ZPE
NE Discussion Groups
Energetic Forum
EMediaPress
Energy Science Forum
Free_Energy FB Group
The KeelyNet Blog
OverUnity Research
Sarfatti_Physics
Tesla Science Foundation (FB)
Vortex (old Interact)
Magazine Sites
Electrifying Times (FB)
ExtraOrdinary Technology
IE Magazine
New Energy Times

Interesting Links

Click Here for the DISCLOSURE PROJECT
SciTech Daily Review
NEXUS Magazine

First Observation of the Dynamical Casimir Effect
Posted on Sunday, May 29, 2011 @ 15:52:32 GMT by vlad

Science
From The Physics arXiv Blog: A rapidly moving mirror that turns virtual photons into real ones is the first experimental evidence of the dynamical Casimir effect.

"One of the most surprising predictions of modern quantum theory is that the vacuum of space is not empty. In fact, quantum theory predicts that it teems with virtual particles flitting in and out of existence."

So begin Christopher Wilson from Chalmers University in Sweden and friends in their marvellously readable paper about a rather extraordinary piece of science.


This maelstrom of quantum activity is far from benign. Physicists have known since 1948 that if two flat mirrors are held close together and parallel with each other, they will be pushed together by these virtual particles.

The reason is straightforward. When the gap between the mirrors is smaller than the wavelength of the virtual particles, they are excluded from this space. The vacuum pressure inside the gap is then less than outside it and this forces the mirrors.

This is the static Casimir effect and it was first measured in 1998 by two teams in the US.

But there is another phenomenon called the dynamical Casimir effect that has never been seen.

It occurs when a mirror moves through space at relativistic speeds. Here's what happens. At slow speeds, the sea of virtual particles can easily adapt to the mirror's movement and continue to come into existence in pairs and then disappear as they annihilate each other.

But when the speed of the mirror begins to match the the speed of the photons, in other words at relativistic speeds, some photons become separated from their partners and so do not get annihilated. These virtual photons then become real and the mirror begins to produce light.

That's the theory. The problem in practice is that it's hard to get an ordinary mirror moving at anything like relativistic speeds.

But Wilson and co have a trick up their sleeves. Instead of a conventional mirror, they've used a transmission line connected to a superconducting quantum interference device or SQUID. Fiddling with the SQUID changes the effective electrical length of the line and this change is equivalent to the movement of an electromagnetic mirror.

By modulating the SQUID at GHz rates, the mirror moves back and forth. To get an idea of scale, the transmission line is only 100 micrometres long and the mirror moves over a distance of about a nanometre. But the rate at which it does this means it achieves speeds approaching 5 per cent light speed.

So having perfected their mirror moving technique, all Wilson and co have to do is cool everything down, then sit back and look for photons. Sure enough, they've spotted microwave photons emerging from the moving mirror, just as predicted.

They finish with a short conclusion. "We believe these results represent the fifirst experimental observation of the dynamical Casimir effect."

Impressive result!

Ref: arxiv.org/abs/1105.4714: Observation of the Dynamical Casimir Effect in a Superconducting Circuit

Source: http://www.technologyreview.com/blog/arxiv/26813/?p1=Blogs


 
Login
Nickname

Password

Security Code: Security Code
Type Security Code

Don't have an account yet? You can create one. As a registered user you have some advantages like theme manager, comments configuration and post comments with your name.

Related Links
· More about Science
· News by vlad


Most read story about Science:
100 miles on 4 ounces of water?


Article Rating
Average Score: 4
Votes: 7


Please take a second and vote for this article:

Excellent
Very Good
Good
Regular
Bad


Options

 Printer Friendly Printer Friendly


"First Observation of the Dynamical Casimir Effect" | Login/Create an Account | 0 comments
The comments are owned by the poster. We aren't responsible for their content.

No Comments Allowed for Anonymous, please register

 

All logos and trademarks in this site are property of their respective owner. The comments are property of their posters, all the rest © 2002-2016 by ZPEnergy. Disclaimer: No content, on or affiliated with ZPEnergy should be construed as or relied upon as investment advice. While every effort is made to ensure that the information contained on ZPEnergy is correct, the operators of ZPEnergy make no warranties as to its accuracy. In all respects visitors should seek independent verification and investment advice.
Keywords: ZPE, ZPF, Zero Point Energy, Zero Point Fluctuations, ZPEnergy, New Energy Technology, Small Scale Implementation, Energy Storage Technology, Space-Energy, Space Energy, Natural Potential, Investors, Investing, Vacuum Energy, Electromagnetic, Over Unity, Overunity, Over-Unity, Free Energy, Free-Energy, Ether, Aether, Cold Fusion, Cold-Fusion, Fuel Cell, Quantum Mechanics, Van der Waals, Casimir, Advanced Physics, Vibrations, Advanced Energy Conversion, Rotational Magnetics, Vortex Mechanics, Rotational Electromagnetics, Earth Electromagnetics, Gyroscopes, Gyroscopic Effects

PHP-Nuke Copyright © 2005 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.