3 ms·
Didn’t realize plexiglass existed in the 1930s!
by BobbyTables2 1y ago
Didn’t realize plexiglass existed in the 1930s!
- jccalhoun 1y agoWikipedia says it was first marketed only 3 years earlier so it was pretty new https://en.wikipedia.org/wiki/Poly(methyl_methacrylate) https://en.wikipedia.org/wiki/Poly(methyl_methacrylate)