This is nice, and a reminder that BBC Four will be showing the Royal Institution Christmas Lectures again, starting next Monday.
I always liked to watch the lectures when I was a kid. What still sticks in my mind decades later were Eric Laithwaite’s series, which if memory serves were called “The Engineer through the Looking-Glass”, which, leaving aside Laithwaite’s slightly odd ideas about gyroscopes, included a demonstration of the linear induction motor – the basis of maglev trains.
Anyway, they’re generally worth a watch – aimed at kids, which means they’re ideal for adults whose science is rusty. And there’s usually an explosion or two.
 Yes, yes, once a geek always a geek, etc…
 As I recall, he believed some odd extra force was being generated. I don’t think he ever convinced anyone