100:00:09,692 --> 00:00:12,052At the dawn of the 19th century,200:00:12,052 --> 00:00:13,772in a cellar in Mayfair,300:00:13,772 --> 00:00:18,092the most famous scientistof the time, Humphry Davy,400:00:18,092 --> 00:00:22,052built an extraordinary pieceof electrical equipment.500:00:22,052 --> 00:00:24,652Four metres wide, twice as long6
