Point Blank Music School - This picture below is a single groove in a vinyl record magnified 1000 times! Ever wondered how it all works? Well... sound is made of waves, these
Watch a Needle Ride Through LP Record Grooves Under an Electron Microscope | Open Culture
Vinyl: How It Works (and What That Means for You) – Flypaper
Vinyl Record Grooves Magnified 1,000x - DAK Industries
Watch needle run through record groove in microscopic detail