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Re: TC Sparks and Arcs (Was - High Voltage Snubber caps
on that fateful day 7/28/00 7:54 PM, Tesla list uttered:
> Original poster: "John H. Couture" <couturejh-at-worldnet.att-dot-net>
>
>
> To All -
>
> What are the definitions and differences between sparks, arcs, streamers,
> corona, etc. Is a 54 inch arc possible?
>
> John Couture
In my conversations with other coilers, and in my readings of coilers'
postings, I have assumed the following definitions. This is how I use these
terms...
sparks - generic term, often used to describe any electrical discharge,
but is often used to refer to streamers
arcs - most often used to refer to "streamers" (see below), but I prefer
to use this term to describe solid secondary discharges connecting
to a grounded conductor. To me, a discharge in an arc lamp of any
kind is an arc. I prefer to use the term "arc" for heavy,
sustained, higher current discharges, or AC discharges, such as
those in a Jacob's ladder; whereas I would use the term "spark"
for light, intermittent, or lower-current discharges, or DC / RF
discharges, such as those from a Tesla secondary or between the
terminals of a small induction coil.
streamers - secondary discharges into free air which do not terminate to a
grounded or conductive object.
corona - soft, dim, fuzzy blue (usually a very distinct blue, as opposed to
bluish-white) glow discharge, often seen around the upper windings
of secondaries insufficiently "shielded" by a toroid, or between
the secondary and primary. May rarely contain lighter colored,
filamentary discharge phenomena - leaders?
- Gomez
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