Physical Science: Laser light makes sound wave patterns visible
Channel: Brian Weir
Date: 2017-02-19

I built my own laser light sound visualizer.  Using a tone generator and multiple tones you can create some awesome light patterns.  We showed this to all of our physical science classes.  The excitement of our classes was pretty cool.  Many students stopped to take pictures of the oscillator and talked about building their own.  The cost of the contraption was hardly anything, just the laser light.