Warm up: put https://m.youtube.com/watch?v=eLDIJvTEBhg on a loop and got detailed observations. They noticed wave speed, wavelength, and amplitude drop when wave pulse transmitted into the heavier snakey. #180blog
Fun fact: this post was created automatically using a recipe I programmed on IFTTT. It grabs all my Instagrams hashtagged with #180blog and auto-publishes them.