How a quartz watch works - its heart beats 32,768 times a second

Get 75% off NordVPN with this link: and use the promo code steve to get the first 30 days free. Quartz watches have a tiny crystal tuning fork inside that vibrates at 2^15 Hz and there’s a really clever reason for that. This video also talks a bit about how mechanical watches work. CORRECTION: Ok, so I actually hung 16 flip flops! So you do need 15. I’m an idiot. The atomic clock video is here: The piezoelectricity video is here: You can buy my books here: Patreon: Twitter: Instagram: Facebook: Buy nerdy maths things: