I loves me some Schlenk flasks. You wouldn't catch a physicst, marine biologist or engineer anywheres near one. Nope, they're just for us dorky chemists.
And it just so happens that their inventor, Dr. Wilhem Schlenk, was a pretty cool dude too.
Article: T. Tidwell. "Wilhelm Schlenk : The Man Behind the Flask,"
Angewandte Chemie International Edition, 40 (2001) 331-337. DOI: 10.1002/1521-3773%2820010119%2940:2%3C331::AID-ANIE331%3E3.0.CO;2-E.
1. That is one crazy-long DOI!