On Dec 1, 2008, at 8:28 PM, <[EMAIL PROTECTED]>
<[EMAIL PROTECTED]> wrote:
Hope you all had a very pleasant and filling Thanksgiving... now on
to the cool stuff.
http://www.physorg.com/news147353581.html
"Specifically, Cagin and his partners from the University of
Houston have found that a certain type
of piezoelectric material can covert energy at a 100 percent
increase when manufactured at a very
small size – in this case, around 21 nanometers in thickness.
What's more, when materials are constructed bigger or smaller than
this specific size they show a
significant decrease in their energy-converting capacity, he said."
I think you have misunderstood what the author intended. It is
ambiguously written and maybe the author did not understand what the
researchers said either. If a device converts energy at 15%
efficiency and is upgraded to 30% efficiency then that is a 100%
increase in energy conversion. It is still only 60% efficient,
however. The "self powering" is via the operator's movements, e.g.
walking or dancing, as the article later states. There is no free
lunch here.
Best regards,
Horace Heffner
http://www.mtaonline.net/~hheffner/
