Visit https://janestreet.com/amp to find out more about their Academy of Math and Programing Gelsight is a microscope the presses gel into the object of study. Thanks to The Sempre Group for showing me their machines! Find out more about them here: https://thesempregroup.com And here's a direct link to GelSight (for non-UK people this is a more useful link): https://www.gelsight.com You can buy my books here: https://stevemould.com/books You can support me on Patreon and get access to the exclusive Discord: https://www.patreon.com/stevemould just like these amazing people: Brendan Williams Edward Unthank Frank Hereford Jeremy Buchanan Tj Steyn Jeremy Cole Matthew Cocke Pavel Dubov Alan Wilderland Alnitak DamTheGreat David Whitesell Grant Hay Heather Liu John Doe John Zelinka Lukas Biewald Marshall Fitzpatrick Matt Nathan Blubaugh Paul Warelis Tim S Root Alnitak Damien Szerszinski Lizzy and Jack 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