Andrew shows how many of the tools that make our life easier are powered by engines, often internal combustion engines.

Starting with a demonstration of a manual sewing machine, and the latest in fashionable North London face-wear, we are shown the workings of both a petrol lawnmower and chainsaw. We finish up with some fiery demonstrations of why petrol is used as a fuel in engines.

Chapters:
00:00 - Tour of an essex sewing machine
03:52 - A word of warning
06:10 - Problematic tree
10:45 - Petrol lawnmower
11:25 - Using a petrol chainsaw
14:43 - Two stroke and four stroke motors
19:51 - How petrol burns
24:22 - A more explosive use of petrol
28:40 - Andrew's lockdown gardening projects

Andrew Szydlo is a chemist and secondary school teacher at Highgate School, well-loved by pupils and Ri attendees alike. He has given public lectures around the country, been featured on TV shows and has become a popular regular face on our channel.

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