Re: Laser guided Tesla Coil

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Yurtle Turtle <yurtle_t@xxxxxxxxx>

As I recall, the rockets spooled off a wire that was
grounded. There were many launches that never spawned
a strike, but a few launches resulted in fanastic
strikes.

Adam

--- Tesla list <tesla@xxxxxxxxxx> wrote:

> Original poster: "Gerry  Reynolds"
> <gerryreynolds@xxxxxxxxxxxxx>
>
> Hi All,
>
> Since we are on this half way "on" half way "off"
> topic,  I remember
> a TV show on lightning where they were measuring the
> field strenght
> at a test site and at the proper time would launch a
> rocket.  The
> rocket's exhaust would create a trail of conductive
> gasses that would
> trigger a lightning strike at the test site.
>
> So.....    Has anyone tried to put a bottle rocket
> on top of the
> toroid to see what would happen.
>
> Gerry R.
>
> >Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>
> >
> >At 08:32 PM 2/15/2007, Tesla list wrote:
> >>Original poster: FIFTYGUY@xxxxxxx
> >>In a message dated 2/15/07 9:28:11 P.M. Eastern
> Standard Time,
> >>tesla@xxxxxxxxxx writes:
> >>
> >> >Yep, joules in nanosecond pulses or giga-watts
> can cause the air to
> >> >"snap" ionize in front of some pulsed Nd-Yag
> lasers
> >>
> >>     My issue with the whole concept of using
> lasers to pre-ionize
> >> a path for an electrical discharge is:
> >>
> >>     You can't ionize the entire channel at once.
> >>     Once the air is ionized, it is no longer
> optically
> >> transparent. If you ionize a spot of air near
> you, you can't
> >> ionize the spot of air in front of it because you
> can't "see" it.
> >>     If you start by ionizing a spot of air
> closest to the target,
> >> then you'd have to ionize the spot just a little
> closer to you,
> >> then a spot a little closer, working your way
> back.
> >>     For any "useful" distance, that's a lot of
> closely-spaced
> >> spots that have to be ionized. I have no idea,
> let's say the
> >> target is 100 meters away, and each "spot"
> becomes an ionized
> >> patch the volume of 1cc. That's 10,000 spots to
> ionize. The time
> >> scale would probably be what, 1/100th of a second
> before
> >> sufficient ion decay to make the spot useless
> (based on Tesla coil
> >> minimum effective BPS). So those 10,000 ionized
> spots would have
> >> to happen at 1 Mhz.
> >
> >
> >One scheme used by the people using lasers to guide
> lightning
> >actually uses multple lasers aimed at a spot to
> cause breakdown (or
> >at least heating). then they move to another spot,
> etc.  and form a
> >chain of all these little hot spots.  So the spark
> isn't being
> >guided ALONG the beam, but a laser is being used to
> do the leading.
> >
> >Same sort of idea might work with large curved
> mirrors with a short
> >focal length to establish the high field at the
> focal point.
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
>
>




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