C'mon guys ... I thought you all were into this sort of thing.
Did
anyone watch the video ?
You can clearly see
in real time the airflow from a guy coughing, and the airflow from a soda as the guy opens it.
If a car drove by as the camera was on, you could clearly see the airflow over the car, as well as the areas of turbulence.
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Phil, tufts and dirt roads don't show the full picture quite as well as this method does.
I'm just wondering what is wrong with it, otherwise it would actually be used for aero research ( on cars that is ) .