On Wednesday, October 23, 2013 9:02:29 PM UTC-4, son_of_flubber wrote:
http://www.youtube.com/watch?v=P12g_fqo2Bo

This is a great video showing what happens to the airflow over a wing during a stall and subsequent spin.

Thanks to son_of_flubber for posting this link. I've sent this out to all the members of my club.

Watching the air flow detach as the critical angle attack is approached is really instructive.

Chuck Z