The (likely?) cheapest home-made Michelson interferometer
https://guille.site/posts/3d-printed-michelson/
#HackerNews #cheapestinterferometer #homemadeoptics #3dprinting #scienceexperiment #MichelsonInterferometer
Build a DIY magnetometer with a couple of seasoning bottles
https://spectrum.ieee.org/listen-to-protons-diy-magnetometer
#HackerNews #DIYMagnetometer #BuildYourOwn #ScienceExperiment #Magnetism #Creativity