Aperture Science
Yes. Go to any church to see partially opaque glass, and many vases are constructed of opaque glass.
No, a clear glass bottle is not opaque. Opaque objects do not allow light to pass through, while clear glass bottles allow light to pass through easily.
Yes, translucent drinking glasses have existed ever since the Carthaginians invented clear glass in approx. 250 B.C.E. whereas opaque glass was invented in Mesopotamia around 3500 B.C.E..
yes
He painted a thick glass wall. The color was opaque red.
yes
The only problem that I see, if it was meant to be opaque, is that you can't see through it, which defeats the purpose of a window. If you are trying to make/buy clear glass, impurities within the glass would not allow light to pass through as easily and I imagine that this might make the glass weaker and less useful.
If the sun can get through but no one can see in then the room is glass opaque. An opaque room will prevent others from seeing in.
No, a clear glass bottle is transparent, allowing light to pass through and objects behind it to be seen. Opaque objects do not allow light to pass through them.
A magnifying glass is typically made of glass and is transparent, allowing light to pass through it.
No, such a transparent metal is not possible. Metals are a conductor of electricity. As a result of this, electromagnetic waves of the wavelength of light cannot penetrate it.
Transparent: Clear glass, clean water, air, and clear plastic. Translucent: Frosted glass, wax paper, stained glass, and lampshades. Opaque: Wood, metal, stone, and thick fabric.