Why mechanical NOISES are so clever

This video is stupid. But this one about klaxons from Technology Connections isn't: https://youtu.be/adD5oC2asXI And here's his video on portable air conditioning units: https://youtu.be/_-mBeYC2KGc I now want one of those 2-pipe models but can't find one anywhere. You can support me on Patreon here: https://www.patreon.com/stevemould just like these amazing people: Glenn Watson Peter Turner Joël van der Loo Matthew Cocke Mark Brouwer Deneb Twitter: http://twitter.com/moulds Instagram: https://www.instagram.com/stevemouldscience/ Facebook: https://www.facebook.com/stevemouldscience/ Buy nerdy maths things: http://mathsgear.co.uk

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