Voltage & Current..

From: Joe R. <rigdonj_at_cfl.rr.com>
Date: Thu Jan 29 19:33:20 2004

   I doubt that it's quartz glass because they have to be able to soften it
so that they can bend it. but I think it's close to quartz. I don't know
what caused the glow but they pull as hard of a vacuum on it as they can
while they bake it. I don't know if the white color is an arc inside the
tube or the tube itself.

   You can make ordinary chemicalware glass glow red/orange with an alcohol
flame and a blowpipe. I used to make all my own lab ware.

   Joe

At 03:46 PM 1/29/04 -0800, you wrote:
>Hi
> Ordinary glass glows a little redish yellow in a dark room,
>when melted. Quartz glass if definitely white hot, when
>melted. I don't think they are using quartz glass for neon
>signs, though.
>Dwight
>
>
>>From: "Teo Zenios" <teoz_at_neo.rr.com>
>>
>>
>>----- Original Message -----
>>From: "Joe R." <rigdonj_at_cfl.rr.com>
>>To: "General Discussion: On-Topic and Off-Topic Posts"
>><cctalk_at_classiccmp.org>
>>Sent: Thursday, January 29, 2004 4:18 PM
>>Subject: RE: Voltage & Current..
>>
>>
>>> At 12:02 PM 1/29/04 -0800, you wrote:
>>> >> > I think perhaps it's best for Lyos to maintain his present beliefs
>>about
>>> >> > voltage and current. Over time I'm sure he'll collect more empirical
>>> >> > data to either confirm or deny his hypothesis (though quite likely at
>>> >> > some cost if he's as stubborn in his beliefs as I suspect the case to
>>> >> > be).
>>> >On Thu, 29 Jan 2004, Gordon JC Pearce wrote:
>>> >> In other words, blows himself up with a 3kV-to-240v electricity pole
>>> >> transformer?
>>> >
>>> >Would that damage the transformer? (how many amps are those?)
>>>
>>> I believe that they're AT LEAST 1 Amp ON THE 3kV SIDE! The neon sign
>>> manufacturer's use them to step the 240 back up to 2 or 3 kV at 1 Amp to
>>> burn the gasses out of the glass walls of tubes that they use to make neon
>>> signs with. They run them at ~1 Amp for 24 hours and the tubes are almost
>>> white hot.
>>>
>>> Joe
>>>
>>Funny, All the glass/quarts tubes I have seen don't glow any color even when
>>melting.
>>
>>
>>
>>
>
>
>
Received on Thu Jan 29 2004 - 19:33:20 GMT