I saw a tweet recently that intrigued me: http://twitter.com/#!/yoz/status/191445005414567937 The voltage of mains electricity varies from country to country: the majority of countries use between 200 and 240 volts, but a small minority (most notably the US, Canada and Japan) use between 100 and 127 volts. Countries using 100-127 volts are shown in red; countries … Continue reading Why kettles boil slowly in the US