Anemometer have accurate wind data under all conditions, including freezing precipitation. Anemometry is also required in monitoring and controlling the operation of wind turbines, which in cold environments are prone to in-cloud icing. Icing alters the aerodynamics of an anemometer and may entirely block it from operating. Therefore, anemometers used in these applications must be internally heated. Both cup anemometers and sonic anemometers are presently available with heated versions. In order for wind speeds to be comparable from location to location, the effect of the terrain needs to be considered, especially in regard to height. Other considerations are the presence of
What Does It Take (Dave Days song) to attack the cast and crew, along with himself. The cast fends off the kids, and its down to the boyfriend and Days. An audience member throws Dave his guitar. Dave blocks a hit from a sword the boyfriend is carrying, and knocks him to the ground by hitting him with the head of the guitar while doing a guitar flip. He then takes the sword he had and puts it to his neck while he is on the ground. The audience then claps, and Days and Lynn hug and wave to the crowd. What Does It Take (Dave Days