Re: 40w globe lightbulb = safe plasma ball?

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

Original poster: "Jamie Mereness by way of Terry Fritz <twftesla-at-qwest-dot-net>" <mereness-at-mindspring-dot-com>

I recall learning on this list that low wattage bulbs have high vacuum and
no backfill.  The evacuation is sufficient to generate X-rays.

> Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <davep-at-quik-dot-com>
> 
>> I use a 40watt clear glass globe light bulb to aid in
>> tuning and an interesting display.
> 
>> when it displays purple, I find this pleasing.  however,
>> the bulb has started to emit a pale green tint (on its interior)
> 
>> as well.
> 
>> I'm guessing that lightbulbs typically are not a very low vacuum.
> 
> Most are NOT vacuum at all, being backfilled with
> Argon, or whatever, to help keep the filament from
> evaporating itself onto the inside.
> 
>> Low enough that xrays or higher energy emissions would be possible.
> There is little higher than xrays (ok: hard gammas:
> 
> also hard to make.
> 
> 
>> I've heard some comments on some tesla pages that coils can
>> generate such high energy particles.  under what conditions should
>> i expect xrays or higher from a coil ?
> Almost always need hard vacuum for xray production.
> 
> Might do some test runs with film, in light tight
> packet.  Hard to know how to calibrate results.
> 
> (Tesla did some experiments with xray tubes...)