Geoff 🏴󠁧󠁢󠁳󠁣󠁴󠁿 on Nostr: Dad's PhD was on stress corrosion cracking in marine environments, he ended up ...

Dad's PhD was on stress corrosion cracking in marine environments, he ended up working on the metallurgy of submarines, aircraft, climbing kit and oil rigs. I can listen to him talk about it for hours. Takeaway advice: don't clean your safety critical aluminium with steel wool.