+100 Before the invention of glass there were very few vertical reflections, amirite?

by Anonymous 2 years ago

not really true. mirrors from polished bronze were known since the antique.

by Anonymous 2 years ago

Even before metallic mirrors, obsidian mirrors were known and used

by Anonymous 2 years ago

Glass was "invented" the first time lightning stuck sand… fulgurite… Also every single rainbow is a vertical reflection…

by Anonymous 2 years ago