I was amazed to learn that it wasn't until 1920 that the electricity supply of big cities like New York and London was standardized on AC/DC, voltage and hertz. Even in 1947 when my parents married, not every household had an electric fridge or washing machine, far from it! "Getting back to civilization" after a trip far from home meant getting back to electricity. Well done Frank Sprague.
I was amazed to learn that it wasn't until 1920 that the electricity supply of big cities like New York and London was standardized on AC/DC, voltage and hertz. Even in 1947 when my parents married, not every household had an electric fridge or washing machine, far from it! "Getting back to civilization" after a trip far from home meant getting back to electricity. Well done Frank Sprague.