Transmissions through time: the 2017 advent calendar
Day 4

Battery powered welding

Saiful Islam tries his hand at welding

Batteries are everywhere in modern life, but these amazing pieces of technology can often seem all too familiar. In this video, Saiful Islam makes sparks fly, and welds a message with a couple of ordinary car batteries.

Saiful Islam gave the 2016 CHRISTMAS LECTURES "Supercharged: Fuelling the future". This clip is from his third lecture "Fully charged".