19. Waves in Medium

[@TheRuffusMD]

one of my great disappointments in life , was that i was not smart enough to major in physics in college.. thanks MIT for making these classes available

[@ManojKumar-cj7oj]

I'm a big fan of your assent 😀

[@ataktalayyucel]

ODTU 💪💪💪

[@berketozlu]

hehe :)