Re: EM only coil?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Antonio Carlos M. de Queiroz by way of Terry Fritz <twftesla-at-qwest-dot-net>" <acmq-at-compuland-dot-com.br>

Tesla list wrote:
 >
 > Original poster: "J Dow by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
<jdowphotography-at-hotmail-dot-com>

 > I'm intrigued with the coils ability to illuminate things at a distance. As
 > I am an artist this is proving immensely interesting. Imagine the
 > possibilities. Lighted objects with no visible power source.

Take a look at the papers by Tesla in:
http://tfcbooks-dot-com/mainpage/site_map.htm
There is a text with several ideas about lighting without wires.
The problem is that anyone entering the field will be subject to
shocks, RF burns, and other potential problems. Any electronic
equipment entering the area is at risk of destruction too.

 > Any way I've personally observed that a coil need not make sparks to put
 > out a large EM field.

Yes, but sparks produce more intense fields. I can trigger a coherer
with a spark, but without sparks I can't.

 > I was reading that when a coil is out of tune it
 > makes a bigger field and the field from a coil that is in proper tune is
 > hardly detectable. I have observer this in my own coils.

Surely increased irradiation from the primary circuit, as little energy
ends in the secondary. Intense local magnetic field. If this is really
true.

 > So lets say I construct a coil for EM purposes only. Obviously the amount
 > of power I use will affect the size of the EM field. But I imagine that the
 > pir/ sec ratio can be wildly out of balance. Any thoughts as to the
 > possible construction?

I haven't seen a demonstration that a secondary coil is required for
the lighting of fluorescent lamps at distance, although this makes
sense. I think that the best would be to have a ground plane and an
insulated plane above serving as terminal for a conventional coil,
correctly tuned.
The lamps would be lighted by the intense local electric field between
the planes, and around them.

Antonio Carlos M. de Queiroz