I saw this link on Facebook today explaining why electrical appliances around the world have infuriatingly different plugs and sockets.
Now I understand a bit about why there are two voltages – plugs, I have seen at least ten in the UK and France alone in recent times – why AC not DC, OK that is simple physics – but the most annoying for me is the AC frequency of US and Europe if you have a timer or clock set to the Hz setting – my darkroom clock is American, so my head has a completely different timeset, a minute at 60 Hz is not the same as a 50 Hz minute.
Thanks for this link Steve for the info – hope to see you in Paris soon