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 Kate Does that it by no means compared to "LA X", but stated that it "contain[ed] scenes of incredible beauty, based on character work and stakes earned over five seasons [that] made it a fine, if imperfect, hour." McGee also commented that the scene in which Claire arrives at the hospital and is helped by Ethan as "freakin' outstanding" and called "What Kate Does" "one of the funniest in the show's history. Aldo, Hurley, and Miles all got off plenty of zingers, which will be necessary in a season in which both mythological and dramatic stakes are raising higher and higher each