Re: strength of vacuum

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

Original poster: Ed Phillips <evp-at-pacbell-dot-net> 

Tesla list wrote:
 >
 > Original poster: Bert Hickman <bert.hickman-at-aquila-dot-net>
 >
 > Antonio and all,
 >
 > I've found that some elongated lamps that are intended for scroll lamps do
 > indeed have a high vacuum instead of inert gas. The glass fluoresces a
 > brilliant yellow-green color, especially if the filament becomes
 > incandescent from field emission (with lots of electrons being emitted). An
 > old antique light bulb I have does a similar thing, only the glass
 > fluoresces a brilliant blue color. In either case, I could easily detect
 > the presence of X-rays via a Geiger counter 8 feet away. Remember that
 > distance is your friend (inverse square law), keep run times down, or,
 > preferably, don't irradiate yourself at all... :^)
 >
 > Best regards,
 >
 > -- Bert --

	What is a scroll lamp and where do you get those bulbs?

Ed