ellenj2018-04-22T07:40:00-04:00Make an "O-silly-scope"
See the sound of your voice as a light pattern on the wall!
https://ellenjmchenry.com/store/wp-content/uploads/2018/04/Osillyscope-demo-red-light.mp4
An oscilloscope (oh-sill-oh-scope) is a machine that lets you see sound waves. The sound waves are analyzed and then turned into a picture on a screen, usually a transverse wave where the...