Hold a piece of thread or knitting yarn about 12" long in your hand.
It will show air flow better than the hand can feel it.
On Mon, 1 Aug 2005 15:35:52 +0100 "Gosling, Richard B"
> Firstly, us Brits are entirely conversant with imperial units, and
> Or you could just hold your hand at different heights above your head
> driving at speed, to try and detect where the strong airflow starts.
> may get some funny looks from other road users!
> Richard Gosling