Hey guys, My psych teacher claimed that there is no physical reason as to why a flag ripples/waves in the wind. I got to thinking and i really coudln't think of why. Afterall, the wind could be blowing at it at a constant angle and rate for a long period of time but it continues to ripple. Is this really a mystery to physicist? or is it just beyond my current thinking...???? Also... a carpenter bee supposedly does not have the capabilities of the propulsion it would need to fly, based on its wing size, yet, it flies. This also true or a myth? thanks in advance guys.