Re: strange ligthning lamp

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

Original poster: Bert Hickman <bert.hickman-at-aquila-dot-net> 

Hi Vladimiro,

The inside surface of the glass bulb is coated with a thin layer of various 
phosphors to provide different colors inside various regions of the bulb. 
The discharge itself is a blue-white color (xenon?), and it emits a bit of 
ultraviolet light which can excite the phosphors. The nearer the discharge 
gets to the glass envelope, the brighter the nearby phosphors will light, 
to the point where the discharge itself seems to change color.

As a result, the single looping discharge pictured on your site appears to 
be colored green in one region, red in another, and blue in a third region. 
Otherwise this device is similar to other plasma globes you've seen.

Best regards,

-- Bert --
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Tesla list wrote:
>Original poster: Vladimiro Mazzilli <mazvla-at-iol.it>
>Hi all,
>Last week I went in Miami for work and I've seen a unusual plasma lamp.
>The lamp was in glass completely clear and formed as an ellissoid., I
>dont' know if there was a second bulb inside. The wirling discharge
>started from the base of the lamp and extingued on the glass.
>I wish to know the characteristic of this lamp, if someone have seen a
>similar device because I have never seen a green discharge in any gas.
>On the base there were a potenciometer thath I think is useful for
>regulate the level of sound when sound
>play rithmic, or the frquency of P/S
>Thank at all. The photo is at
>http://hot-streamer-dot-com/temp/Mazzilli/Dscn2869b.jpg
>
>.