Re: 40w globe lightbulb = safe plasma ball?

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

Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>" <davep-at-quik-dot-com>

Tesla list wrote:

> 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.

	How low is "low"?
	My impression is that this applied to 7W and down, say
	xmas size and down.  If the bulb has streamers inside, its
	not evacuated...


>>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...)

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	dwp

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