Re: Thorated vs Pure Tungsten

Tesla List wrote:

> Original Poster: wysock-at-ttr-dot-com
> To Terry (specifically) and All,
> Please reconsider your design for a "safety gap."  I worte to you
> before, about using either brass or copper sphere electrodes,
> for this purpose.  They can either be solid machined pieces, or
> hollow-spun units.  The solid pieces are needed where you are
> operating at a.c. input levels above about 5 Kva.  The "ball gap"
> offers a very well defined E-field stress line model, between the
> two electrodes, assuming that they are polished and very smooth
> and of a constant radius of curvature.

Keep your eyes open at yard sales and flea markets for old brass doorknobs
- they're
already nicely  curved, have a decent radius of curvature, look spiffy, and
work just
great as safety gaps.  In addition, they're already threaded so it's easy
to mount
them and attach your wires to them.