For me, a key question is why the entirety of Heathrow depends so strongly on one electricity substation. Why is there not an alternative supply? This makes me think there's something else that&… (View Post)

A funny little story about transformers/substations. My dad's company demolished an old substation. The floor of this was (for some reason) made of heavy wooden blocks, each about six inches or … (View Post)

"Transformer oil's primary functions are to insulate and cool a transformer." https://en.wikipedia.org/wiki/Transformer_oil From memory, we're talking 10,000 gallons and above. No… (View Post)

I was actually just thinking that: do people swim across the Solent between the Isle of Wight and the mainland? It must be possible, but I haven't heard of anyone doing it. Perhaps it's jus… (View Post)

Nah, I wasn't assuming that. It's just that I'm well aware that a lot of the anti-vax and anti-lockdown people are very keen on both using hindsight and ignoring reality. Therefore I a… (View Post)