6 Inventions That Are Older Than You Think

Visit https://brilliant.org/scishow/ to get started learning STEM for free. The first 200 people will get 20% off their annual premium subscription and a 30-day free trial. From steam engines, to contact lenses, to biometric security based on someone's voice, there are a lot of inventions out there that are older than you think. Hosted by: Hank Green (he/him) ---------- Support us for $8/month on Patreon and keep SciShow going! https://www.patreon.com/scishow Or support us directly: https://complexly.com/support Join our SciShow email list to get the latest news and highlights: https://mailchi.mp/scishow/email ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Odditeas , Garrett Galloway, DrakoEsper , Kenny Wilson, J. Copen, Friso, Lyndsay Brown, Jeremy Mattern, Jaap Westera, Rizwan Kassim, Harrison Mills, Christoph Schwanke, Jeffrey Mckishen, Eric Jensen, Chris Mackey, Adam Brainard, Ash, You too can be a nice person, Piya Shedden, charles george, Alex Hackman, Kevin Knupp, Chris Peters, Kevin Bealer, Jason A Saslow ---------- Looking for SciShow elsewhere on the internet? SciShow Tangents Podcast: https://scishow-tangents.simplecast.com/ TikTok: https://www.tiktok.com/@scishow Twitter: http://www.twitter.com/scishow Instagram: http://instagram.com/thescishow Facebook: http://www.facebook.com/scishow #SciShow #science #education #learning #complexly ---------- Sources: https://docs.google.com/document/d/1HeZvv7csKAugBC5XogZ2AUBYqlPHenFIal5Oh-uuF10/pub