They all were proficient in Latin. From the Middle Ages until about the middle of the 20th century, Latin was a central part of a manâs schooling in the West. Along with logic and rhetoric, grammar (as Latin was then known) was included as part of the Trivium â the foundation of a medieval liberal arts education.
Duct Tape was Originally Named âDuckâ Tape and Came in Green, Not Silver. Today I found out Duct tape was originally named âDuckâ tape and originally only came in green, not silver. Duct tape was originally invented by Johnson & Johnsonâs Permacel division during WWII for the military. The military specifically needed a waterproof tape that could be used to keep moisture out of ammunition cases.
History of Plumber Tape. â¢ 1938 â Dr. Roy Plunkett, a DuPont scientist, discovered polytetrafluoroethylene (PTFE). â¢ 1946 â DuPont registers the trademark, Teflonâ¢ for PTFE. â¢ Late 1940s â DuPont began marketing PTFE on a small scale for certain industrial applications, including valves, o-rings, and pipe linings. â¢ 1969 â DuPont PTFE fine powder is used for plumber tape for sealing joints in piping and central heating systems.