What Measures Wind Speed?

First off many people think that a wind vane does it, but it don’t. A anemometer does. This device has no less than 3 cup like half circles on a metal rod. The none digital ones require you to do math to see how fast it’s going. The new digital ones that weather people use automaticaly caculates and gives an approxiamate speed. For my junior year in high school I had to make one of these. Not only make it, but take it outside and caculate the speed. To see a picture of an anemometer please click the link below. Look here for more information: