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From: "Sir Charles W. Shults III"
References: <3ddcc905$0$22279$9b0f33e3@clyde> <3DDD385B.2200CDF1@cox.net> <firstname.lastname@example.org> <7EED9.email@example.com> <firstname.lastname@example.org>
Subject: Re: Small Tesla Coil
X-Newsreader: Microsoft Outlook Express 6.00.2600.0000
Date: Sat, 23 Nov 2002 15:39:38 GMT
NNTP-Posting-Date: Sat, 23 Nov 2002 10:39:38 EST
Organization: RoadRunner - Central Florida
"Steve Jones" wrote in message
> what is rebar? i've not heard of that before.
It's a length of steel rod used to reinforce concrete.
> As technology improves the power supply will get smaller so it isnt really
> an issue - we know it will happen. Batteries are getting more powerfull all
> the time.
No, they aren't. Batteries are pretty much the same as they were 50 years
ago as far as energy density and size. We can recharge more types now, that's
> Its more the method of contructing and controlling the arc or lazer.
There is no such thing as a "lazer" (sic). It is LASER, Light Amplification
by Stimulated Emission of Radiation. It started life as an acronym and is now a
word in popular usage. No "z" required.
> problem with a lazer is how to make it 3 feet long.
Do you mean making the beam 3 feet long? Many old gas lasers are larger
than 3 feet in length. However, you won't be waving them around in the air
without three or four stout friends helping you.
> They tend to go on
> forever. And also, lazers wont bounce off each other so sword fighting would
> be a bit silly. This is also true of the arc. How do we create a seemingly
> solid form of energy thats cuts through everything and is only 3 feet long
> or less?
Plasma torch? Modified microwave beam? I read about an "energy beam" that
was created by a conduit with microwave energy being inserted into a plasma
stream that could reach a temperature of 40,000 Kelvin. It could cut anything,
since this is way above the binding energy of any matter (except perhaps neutron
But nobody talks about the fact that with a "light sword" of this type, the
x-rays will kill you in short order.
> I thought magenetics may be the answer, opposites attract but the same poles
Magnets will not deflect a light beam. 2 minutes with a magnet and a
flashlight would show you this.
> containing the energy in this small area may infact concentrate it and so
> increase the chances of cutting through things.
Well, sure, but that is not how to do it. Besides the fact that a typical
laser these days in rated in the milliwatts and isn't going to cut anything much
larger than a few cells, even if focussed properly.
> Its a facinating problem i think. Its easy to dismiss it but harder to think
> seriously about it and find ways of actually acheiving it.
So why do you really want to develop a portable, silent device that can cut
through objects, people, locks, etc.? Will that sort of technology make you
feel safer? It would be a simple step to go from the light sword to a larger
weapon that could slice through anything.
This harkens back to the electric versus internal combustion car. A tank of
gas is almost impossible to beat for energy density. A light sword, once
displayed, is susceptible to the user being shot with a simple .22 pistol.
Bullets are cheap and long range.
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip
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