Anemometer is blowing on the back of the cup on the opposite end of the cross. Since a hollow hemisphere has a drag coefficient of .38 on the spherical side and 1.42 on the hollow side, more force is generated on the cup that is presenting its hollow side to the wind. Because of this asymmetrical force, torque is generated on the axis of the anemometer, causing it to spin. Theoretically, the speed of rotation of the anemometer should be proportional to the wind speed, because the force produced on an object is proportional to the speed of the fluid flowing
What She Does Best What She Does Best What She Does Best is a studio album by country singer Lynn Anderson, released in 1988. It was her only album with Mercury records. Notable due to featuring her last charting single, "What She Does Best" did not chart and was commercially unsuccessful. It would be her last album for four years, as Anderson went into a brief retirement and officially retired from releasing singles. The singles from this disc were "Under the Boardwalk" (a cover version of The Drifters' hit), "What He Does Best", and "How Many Hearts". "Under the Boardwalk" reached No. 24; the