Head to https://80000hours.org/steve to start planning a career that is meaningful, fulfilling, and helps solve one of the world’s most pressing problems.

Gas or petrol pump nozzles turn off automatically when your tank is full. The way it works is really clever and uses the venturi effect.

You can buy my books here:
https://stevemould.com/books

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just like these amazing people:

Frank Hereford
Will Ackerly
Brendan Williams
Cameron Leigh Middleton
Matthew Cocke
Frederic Merizen
Jeremy Cole
Lizzy and Jack
Alan Wilderland
Joel Van der loo
Glenn Watson
Doug Peterson
Paul Warelis
John Zelinka
Alnitak
Grant Hay
Heather Liu
Marshall Fitzpatrik
Lukas Biewalk
JJ Masson
Ben McIntosh
Damien Szerszinski

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Buy nerdy maths things: http://mathsgear.co.uk