Also sort of annoyed how all of these movies seem to thing a separatory funnel is for drip adding something. What they need is a dropping addition funnel, but those aren't a cool shape because they are actually meant to be easy to judge volume in and I guess separatory funnels are cooler?
Published today!
Lee, Grace Juwon, and Rebecca M. Jones. 2026. “Shielding through Time: Bridging the History and Teaching of Slater’s Rules.” Journal of Chemical Education
Very nice collection of (organic) chemistry links and resources from @acsorganic
Pretty amazed that they have an advisory board for this resource, and it seems (at first glance) to be pretty up-to-date.
Kudos!
Kind of freaked out by having something that I think has both amine & acid functionalities that isn't sitting on the baseline on TLC (using NH4OH treated plates).
Me: "For its age this pump looks remarkably clean"
Drains oil, puts in a small amount of fresh oil, runs for 30-45 min, drains again and there is a lot of particulate.
Me: "Hmm"
Opens pump to find out the reason it was clean on the outside was probably because people weren't changing the oil frequently enough.
Relatedly if you have one of these lying around the lab and were scratching your head wondering what it was for (I was until yesterday, we have one old one mixed in with the regular stopcocks) I'd be happy to take it/them off your hands if you want to pop it in a padded envelope and ship it.
"How Bell Labs Won Its First Nobel Prize” by Brian Potter.
A great read about the 1925 Davisson and Germer experiment (the canonical “electrons have wave properties” xpt that our chemistry undergrads learn about in physical chemistry class).
Such a long and winding road from inception to realization of what they had discovered. I was unaware of all the details, and found this very enlightening!
#Chemiverse #Chemistry #HistoryOfChemistry
https://www.construction-physics.com/p/how-bell-labs-won-its-first-nobel
When you hear the sound of breaking glass from around the corner and a hushed "oh no".
Anyone know if there is something you can dip TLC plates in to make them act like F254 plates if they didn't come with the fluorophore incorporated? I inherited a box of nice 20x20 glass backed plates without the fluorophore, but I already had a box and use far more fluorescent plates than non-fluorescent ones.
Sam Levine
Dr. Ferrous
Andy Napper
Mathias Micheel