[Stoves] GLASS for stoves .
Andrew Heggie
aj.heggie at gmail.com
Sun Dec 24 04:02:09 CST 2017
On 24 December 2017 at 01:51, Crispin Pemberton-Pigott <
crispinpigott at outlook.com> wrote:
> I
> Shoes in North America and Europe often have a large glass front window
> because fires are social. 'firelight' and all that.
>
Yes that's my feeling too
>
> In Africa people are nervous and uncomfortable if they have a stove
> without a visible fire. In Namibia we had to ensure the cooking stove had a
> visible fire or the San people wouldn't use it.
>
They won't be keen on electric cooking then?
> The cost of the glass is in the preparation and production. The materials
> are nearly free so I think the cost will remain high. Unless there is a
> miracle formulation.
>
I'd guess this is so, normal glass is just silica sand and a bit of lime
to decrease the fusion temperature.
Borosilicate glass, Pyrex brand here in UK , has a much higher melting
point so more expensive, also lower coefficient of expansion, so shock
heating or cooling don't build up internal stress.
I don't know what ceramic glass is nor why ordinary glass is not considered
a ceramic.
>
>
>
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