Question

How is stained glass made?
a.
adding metallic oxides to sand and ash or lime, then infusing at high temperatures
b.
adding metallic oxides to salt, then infusing over time at low temperatures
c.
adding metallic oxides to sulfur, then infusing at high temperatures
d.
adding metallic oxides to sulfur, then infusing at low temperatures


Please select the best answer from the choices provided

A
B
C
D

Answer 1

A

Stained glass is made by adding metallic oxides (colorants like copper, cobalt, manganese, gold, etc.) to the glass batch (sand with soda ash and lime) and melting them together at high temperatures.