> I personally think CERN project is amazing,, and I appreciate the tidbit
> of explanation as it really does allow me to visualize that is happening..
> I would never have thought of using a magnetic field as a mirror.
>
> the whole project is amazing thank you
> Allan
>
Funny, a deck of Tarot cards is simply a deck of mirrors when used
properly. Remember, the universe is holographic and mirrors abound
throughout it.
>
>
>
>
> On Thu, Dec 1, 2011 at 1:39 AM, archytas <nwte...@gmail.com> wrote:
> > I tend to like science that doesn't require building vast entities
> > like the LHC at CERN. Stuff I could do on the kitchen table is more
> > my scene and hopefully simple enough to show my grandson, at least in
> > principle.
> > Wilson, C., Johansson, G., Pourkabirian, A., Simoen, M., Johansson,
> > J., Duty, T., Nori, F., & Delsing, P. (2011). Observation of the
> > dynamical Casimir effect in a superconducting circuit Nature, 479
> > (7373), 376-379 DOI: 10.1038/nature10561
> > is an example - though I actually can't do this one.
>
> > I went through undergraduate chemistry "knowing" about virtual
> > particles, though I mistakenly thought they were accounting devices
> > rather than real. I "knew" too that vacuums were full of such stuff.
> > The thought experiments all seemed undoable. Here's a description of
> > the plucking light from vacuum job.
>
> > "In addition, there is also the dynamic Casimir effect. This occurs if
> > the mirrors are moving very fast so that the electromagnetic field in-
> > between has no time to adjust. Instead, the ripples in the field
> > caused by the fast mirror movement lead to the emission of a light
> > particle. Basically, the mirrors create light out of the
> > electromagnetic field in a similar way that a guitar player generates
> > sounds from plucking a string. The problem with the experimental
> > realization of the dynamic Casimir effect is that the mirrors need to
> > move seriously fast. Otherwise the system has time to adjust to the
> > new geometry of the mirrors, and no light will be excited. We are
> > talking about speeds close to the speed of light!
>
> > Such fast mirror movements are simply not possible with mechanical
> > mirrors. What is needed is an analogue that changes the dimension of
> > the vacuum by other means. Fortunately, such systems exist in
> > superconducting circuits, where magnetic fields applied to a so-called
> > SQUID circuit on a chip achieve the same moving mirror function for
> > electromagnetic fields. Moreover, fast-changing magnetic fields are no
> > problem to create. In the present experiment the mirrors 'move' at a
> > quarter of the speed of light, which corresponds to a driving
> > frequency for the magnetic field of more than 10 gigahertz. The
> > dynamic Casimir is clearly observed, with light being generated at the
> > expected frequencies.
>
> > This is certainly a beautiful study confirming the intriguing
> > properties of quantum mechanics. And what's more, it doesn't need
> > Hawking's black holes to experiment with them, all that's needed is a
> > table-top setup of superconducting circuits. This ease of
> > experimentation will make sure we will learn much more about these
> > virtual fluctuations in vacuum from future experiments."
>
> > As a kid I used to hear that money could not be produced from thin air
> > and such - these days it seems more and more of what was nothing
> > actually is something.
>
> --
> (
> )
> |_D Allan
>
> Life is for moral, ethical and truthful living.- Hide quoted text -
>
> - Show quoted text -
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