History: A laboratory technician lifts two plastic rods from a boiling bath of hot sulfuric acid to demonstrate the newly invented Teflon. 1940s. [540 X 693]

http://i.imgur.com/Fyhd5Ix.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/5bstcw/a_laboratory_technician_lifts_two_plastic_rods/?utm_source=ifttt