Re: RQ gaps was -JF efficiency theory (again) - A possible work around.

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

Original poster: "Mark Broker by way of Terry Fritz <twftesla-at-uswest-dot-net>" <broker-at-uwplatt.edu>

Thin strips of glass between the pipes ought to help.  Perhaps sone glass
slides, available from most any science surplus store?  The glass would also
help reduce the amounts of O3 and NO that land on the PVC (or whatever) backing
as well as shield the UV.

Varnish is used to cover epoxied boats.  The SPS (society of physics students)
is building a couple cedar strip canoes, which are fiberglassed and epoxied. 
The epoxy breaks down under long-term UV exposure, so they have to be coated in
expensive (about $80/gal) varnish.  It's expensive varnish because it has to be
rated for continuous under-water duty in our boating application.  Regular old
spray-on varnish will accomplish the same thing for a non-under-water
application such as this.  However, I'd recommend using high-gloss, as it's
harder than satin.

Mark B


Tesla list wrote:

>
> Original poster: "Garry Freemyer by way of Terry Fritz
> <mailto:twftesla-at-uswest-dot-net><twftesla-at-uswest-dot-net>"
<mailto:garry-at-ndfc-dot-com><garry-at-ndfc-dot-com>
> 
> I remember reading that glass tends to block ultraviolet and for that
> reason, they make black lights with a special glass that lets the uv
> through. I also remember that certain plastics that are used in sunglasses
> also block UV.
> 
> I was wondering if maybe the degradation could be reduced by slipping thin
> strips of glass or this plastic between the gaps would help. Or maybe if
> certain varnishes might block UV and maybe the interior of the pvc could be
> coated with this?
> 
> I also wonder if the ozone or nitrous oxide in the gap might also be
> contributing to the degradation. Since the gap is constantly produc!
> ing NO
> and 03, it would always be present to some degree.
>