John Navas <spamfilter0@navasgroup.com> hath wroth:

>>>>><http://news.bbc.co.uk/2/hi/technology/6129460.stm>:
>>>>>
>>>>> US researchers have outlined a relatively simple system that could
>>>>> deliver power to devices such as laptop computers or MP3 players
>>>>> wirelessly.

>Google and all the other search engines down?

Sorry, I was late for lunch and didn't even bother to look. Thanks
for the link.

>* <http://eprintweb.org/S/article/physics/0611063>

>You're accusing MIT, these scientists, and a professional society of
>promulgating fiction, without having read the paper, based simply on
>your own quick assessment of a BBC article?

Well, yes. That's exactly what I did. I've done far more spectacular
jobs of shoving my foot in my mouth in the past, so I'm used to the
experience. Occasionally, I'm even right. What I posted is accurate
for a simple RF resonant transformer which is what I assumed was under
discussion. Apparently not.

>>What is unique is this section:
>> To overcome this problem, the team investigated a special class
>> of "non-radiative" objects with so-called "long-lived resonances".

>Again, I respectfully suggest you actually read the research instead of
>making assumptions and leaping from them to all those conclusions. I've
>hopefully now got you started.

Yep. Again, thanks for the link. I've read the 17 page article
several times and understand very little of it. I'm not a theoretical
physicist and the terminology, buzzwords, and notation is way over my
rapidly balding head. What I have been able to determine is that it
only works with:
"long-lifetime resonant electromagnetic states with localized
slowly-evanescent field patterns"
of which I've able to find very little. I found some research on
non-radiating objects in nano research under quantum dots, where
emissions from a quantum well does not propagate in the same manner as
conventional electromagnetic radiation.

The paper assumes that such a non-radiative phenomenon exists,
speculates as to how it might work for transferring energy, and how
human body interference might cause problems. This is quite proper as
the authors are all involved in the Center for Materials Science and
Engineering and Research Laboratory of Electronics at MIT.

Two examples are given. The "whispering gallery" construct, which are
two parabolic dish reflectors separated by a high dielectric material
disk. The other is a conventional resonant symmetrical RF transformer
composed of this non-radiative class of material.

The question of how one is to conjure such a non-radiative material
with long-lived resonances is not explored. I consider this to be a
rather fundamental problem thus making the immediate exploitation of
the theory into practical products a rather dubious proposition. The
supplied references to the technology (2,3,4, and 5) all refer to
conventional transformer action or RF power transmission, with no
mention of any exotic non-radiative material. As far as I can
determine, none of the other references offer anything better.
(Translation: The stuff doesn't exist yet).

Unless I missed something (a real possibility), the lack of any
references as to the nature of this non-radiative and long-lifetime
resonant (high Q) material suggests that the trade press may have
misinterpreted the purpose of the paper. It appears to be
calculations involving the feasibility of using such a material for
power transmission should such a material be found. In other words,
it's the traditional "more research is necessary" sales pitch for
funding research into finding such a material. Whether this can be
accomplished is subject to additional debate.

--
Jeff Liebermann jeffl@comix.santa-cruz.ca.us
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558