An Einstein Enigma

I spotted this cartoon version of the iconic photo of Albert Einstein sticking his tongue out in the unlikely surroundings of a platform at Chalfont & Latimer tube station this morning. It was printed on the side of an enormous bright yellow rail milling and grinding machine, which also seemed to be named "Einstein" in the famous physicist's honour. I'm guessing that it's an enigmatic reference to his train-and-platform thought experiment on the Relativity of Simultaneity.

Just don't ask me to explain it.


A rail milling machine is used to restore the profile and remove irregularities from worn rail track to extend its life and to improve the ride of trains using the track.