Re: carbonic acid

Salmon Egg wrote:

In article <47DC99F9.FD95E5F5@xxxxxxxxx>,
Mark Thorson <nospam@xxxxxxxxx> wrote:

Possibly, fused silica, not glass?

You are probably correct. But why do you not consider fused silica to be
a glass? How does it differ from a glass? True, it may not have soda or
lime to lower its softening temperature.

In the scientific sense it is a glass (as are
a number of materials that do not contain silica),
but in industry a distinction is made between
glass and fused silica.

The additives have a huge impact on its properties.
For example, you can blow shapes in glass
that would be impossible in fused silica.
You can heat a piece of silica to red heat,
then plunge it into water without it cracking.
.

Relevant Pages

  • Re: This distrust of glass canopies seems like bunk
    ... > You lose 6-8% of the light from the two additional interfaces. ... > (glass) doesn't absorb significantly at the wavelengths in question so it's ... fused silica is an exotic synthetic material, ...
    (rec.aquaria.marine.reefs)
  • Re: Old (?) glass type FS-2
    ... I've been designing with Schott glass since the 1970s and I also cannot ... I believe that fused silica has a ... Prev by Date: ...
    (sci.optics)
  • 75 um protective cover glass on film
    ... I'm trying to cover a photographic film target with a 75 micron ... protective cover, either glass, fused silica or whatever. ... Does anyone know of any technique or company to make 75 micron glass ...
    (sci.optics)
  • Re: carbonic acid
    ... Mark Thorson wrote: ... But why do you not consider fused silica to be ... How does it differ from a glass? ...
    (sci.chem)