John Logie Baird
Initially 30 lines at
Improved to 240
Tried to create diamonds by heating graphite and shorted out Glasgow's electricity supply.
Baird perfected a glass razor; it was completely rust resistant, but it shattered.
Inspired by pneumatic tyres he had a go at pneumatic shoes, but his prototype contained semi-inflated balloons which burst.
He also invented a thermal undersock, which was actually a mild success.