array9

 I guess one might think that this is a simple concept, indeed a simple number or vector, but I suspect that it is rather full of definition and environment problems.  I am thinking of things like ...

- direction.  does it have to be horizontal component? stable? spacial average? away from large objects in the environment? time averaged? time averaged?

- speed.  filtered atmosphere? weighted average? atoms only? linear motion? spirals?

- linear average, with no horizontal screws

- what weighting do you give to individual particles ( their energy?)

- do you include neutrinos? photons? 

- do you have a standard height above ground?

-does it have to interact with a physical object ( propeller )

My only idea was to release a puff of standard powder into the air, and take a photo of it after a fixed time.  This might allow one to see what a complex idea 'wind speed' really is.

martin

# posted by martinW @ 3:52 pm