Check out Anker 521 Portable Power Station: https://ankerfast.club/3vq4RRe #AnkerPowerHouse #PowerStation I got a glass pop-pop boat made (or putt-putt boat, or a Ponyo boat!) to see once and for all what's going on inside! The Entropy video featuring the Stirling engine is here: https://www.youtube.com/watch?v=w2iTCm0xpDc You can also discuss this video on REDDIT: https://stvmld.com/jaur7yt4 CREDIT: The bristlebot footage is from here: https://www.youtube.com/watch?v=m8-bfXUTQnE You can buy my books here: https://stevemould.com/books You can support me on Patreon here: https://www.patreon.com/stevemould just like these amazing people: Frank Hereford Will Ackerly Brendan Williams Cameron Leigh Middleton Matthew Cocke Frederic Merizen Jeremy Cole 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 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/