One can learn interesting but off-topic things along the way to a particular subject of research. Below is a compilation of interesting things.

We are all aware of the games Russia is playing with the interruption of natural gas supplies to Europe. A noteworthy consequence of this applies to the refining of petroleum. Evidently, refineries use natural gas in the refining process, likely as a fuel for heating process equipment. A shortage of natural gas may/will have an adverse effect on the ability of European refineries to produce fuels from crude oil.

There is a German theoretical physicist named Sabine Hossenfelder who has been producing short videos for YouTube. I’ve seen a few and they are quite good. She doesn’t pander to the lowest common denominator. Instead she speaks like a theoretical physicist talking to intelligent non-specialists and does a bang-up job of it. She gives a thoughtful and skeptical analysis of current topics in theoretical physics. She always gets back to basic concepts and what is possible for science to understand. She has moved on to subjects of popular interest as well.

And speaking of videos on YouTube, I’ve taken a shine to a channel called Periodic Videos. The presenter is professor Sir Martyn Poliakoff of the University of Nottingham. It may take a few moments to overcome the shock of his wild white hair. Poliakoff has produced a great many short videos over the years specializing in the chemical elements. A good one I viewed recently was about burning magnesium in a nitrogen atmosphere. Yes, it can happen and it will produce magnesium nitride. Contact it with water and you get ammonia. It is easy to think that nitrogen is an all around inert gas and for the most part it is. Lithium metal springs to mind when inert atmosphere questions arise. Better use argon.