The Invention of Glass
The peoples of northwestern Iran invent glass. Introduces the second great nonmetallic engineering material (following ceramics).
A word about the original artwork: It was created by TMS’s David Rasel, who drew stylistic inspiration from the etchings in Georgius Agricola’s De Re Metallica. David’s mix of anachronism, whimsy, and technical/historical artistic license adds a memorable stamp to the proceedings.