Get 70% off a 3 year NordVPN plan with this link: https://nordvpn.com/steve and use the promo code "steve" to get 1 additional month free. You can find absolute zero experimentally by taking a fixed amount of gas and measuring it's volume at different temperatures while keeping the pressure fixed. It makes use of the ideal gas law (pv=nRT) or Charles's Law. Image and video credits: Expansion of the universe animation - NASA's Goddard Space Flight Center Jesus - Cicero Moraes 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: 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/