I like the rainbow of colours you can anodize Nb with ( I am sure I called Niobium, Neodymium sorry). Then vanadium oxide toggles from an insulator to a conductor at room temperature. Those f electrons in period 6 really mix things up. Podcast
Podcast Here I was technically unfair saying my belief that all thing scope must have and eye -piece. However electrons are reflected not transmitted as in the DG experiment.
Interesting story about the Safety Control Rod Ax Man SCRAM. Podcast
34 min
About Peter Hill Explains
From the publisher's feed
You are welcome to listen in as I "explain things scientific". I have had great fun with lasers, robots and absorbing Quantum Physics. Now as a classroom teacher, laid low by heart surgery its time…
to pick yourself up, dust yourself off and give it all you've got. "And in the mean time keep on doing science"