What evidence is there that they've defeated skin effect? If they
haven't, the advantage drops to the square root of the DC advantage
(e.g., a little more than 3:1 if the DC advantage is 10:1). Also, I
wonder if the bulk resistivity of these gadgets remains constant with
frequency like solid copper, or rises with frequency like
superconductors. If it rises with frequency, then the advantage becomes
less yet, potentially even becoming worse than copper at some frequency.

Roy Lewallen, W7EL

Frank wrote:
"Hal Rosser" wrote in message
...

"I.Care" wrote in message
st.net...

NASA is funding a new type of wire that can transmit power 10 times
better than normal wire. Will this make a difference in Audio?

Does this mean that the resistance per ft for nanotubes is 1/10th that of
copper?
Are they comparing this performance by weight or by volume of wire
("pound-for-pound", or "cross-sectional-area" )
Then we have to talk about tensile strength of this stuff for
supporting its own weight between trees to use as an antenna
Then ya gotta conjure up a way to solder the feedline to it. (or make
feedline out of it)


If the resistance is 1/10th that of copper then it should be possible to
manufacture helical inductors with Qs approaching 10,000. Not only that,
but open wire transmission lines would have very low loss, therefore making
it feasable to feed antennas with very small electrical dimensions. How to
handle the votages involved would be something else!

Frank