Madelineblackbart: Created page with "Glass is chemistry and furnaces rather than power, so the Known World's is centuries ahead of what the rest of its technology would suggest. == Optical glass == The foundation of the world's medicine. Crown and flint, achromatic pairs, careful annealing, and lens grinding as a respected trade in its own right. Without it there are no microscopes, and without microscopes there is none of what medicine can do. == Vessels and chimneys == Borosilicate for an..."

2026-10-12T03:08:17Z

Created page with "Glass is chemistry and furnaces rather than power, so the Known World's is centuries ahead of what the rest of its technology would suggest. == Optical glass == The foundation of the world's medicine. Crown and flint, achromatic pairs, careful annealing, and lens grinding as a respected trade in its own right. Without it there are no microscopes, and without microscopes there is none of what medicine can do. == Vessels and chimneys == Borosilicate for an..."

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Glass is chemistry and furnaces rather than power, so the Known World's is centuries ahead
of what the rest of its technology would suggest.

== Optical glass ==

The foundation of the world's medicine. Crown and flint, achromatic pairs, careful
annealing, and lens grinding as a respected trade in its own right. Without it there are no
microscopes, and without microscopes there is none of [[Medicine|what medicine can do]].

== Vessels and chimneys ==

Borosilicate for anything that will be heated: apothecary and laboratory ware, lamp
chimneys, and the sight glass on every boiler in the world.

== Mirrors ==

Silvered with silver nitrate rather than tin and mercury, so they come out clear and flat
and nobody is poisoned making them.

== Strengthened glass ==

Soaked in a hot salt bath so the surface goes into compression. A [[Clearhold]] specialty,
documented and priced accordingly, and how you get a lamp globe that survives a drop or a
sight glass that does not let go when a boiler surges. Thermally tempered glass exists too,
quenched with a blast of air from a steam blower.

== Plate ==

Cast, ground and polished, limited in size by the table it is polished on, and expensive.
There is no float glass, which would want an industrial tin bath — see [[The Ceiling]] — so
windows are divided by glazing bars and a single large pane is a display of wealth rather
than a building material. A [[Shining Reach]] shopfront with four big panes is saying
something about its owner.

== Who is best at what ==

[[Eldershore]] blows the best colour. [[Clearhold]] does the precise and documented work.
[[Forgegate]] makes everything in volume. Shining Reach buys the large flat pieces and puts
them where visitors will see them.

== See also ==
* [[Minerals of Teraell]] · [[Medicine]] · [[The House]] · [[Clockwork]] · [[The Trades]]

Glass - Revision history