what does cup anemometer refer to?
A simple type of anemometer with four hemispherical cups mounted on horizontal arms, which were mounted on a vertical shaft.
Anemometer
A simple type of anemometer was invented in 1845 by Rev Dr John Thomas Romney Robinson, of Armagh Observatory. It consisted of four hemispherical cups mounted on horizontal arms, which were mounted on a vertical shaft.
most of the u.s. is situated in which zone of prevailing surface winds Northern temperate zone how is nature affected because of this prevailing winds? Insects are swept along by the prevailing winds, while birds follow their own course. In the Great Plains, wind erosion of agricultural land is mainly driven by the prevailing wind. Because of this, wind barrier strips have been developed to minimize this type of erosion. does it cause impact on trades? Yes - the trade winds blow predominantly from the northeast in the Northern Hemisphere and from the southeast in the Southern Hemisphere. The trade winds act as the steering flow for tropical cyclones that form over world's oceans, guiding their path westward. how is wind rose related to it? It is a graphic tool used by meteorologists to give a succinct view of how wind speed and direction are typically distributed at a particular location. It shows the frequency of winds blowing from particular directions. how is the speed of the wind measured? Anemometer
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Anemometer [SEP] Cup anemometers
A simple type of anemometer was invented in 1845 by Rev Dr John Thomas Romney Robinson, of Armagh Observatory. It consisted of four hemispherical cups mounted on horizontal arms, which were mounted on a vertical shaft. The air flow past the cups in any horizontal direction turned the shaft at a rate that was roughly proportional to the wind speed. Therefore, counting the turns of the shaft over a set time interval produced a value proportional to the average wind speed for a wide range of speeds. It is also called a rotational anemometer. On an anemometer with four cups, it is easy to see that since the cups are arranged symmetrically on the end of the arms, the wind always has the hollow of one cup presented to it and is blowing on the back of the cup on the opposite end of the cross.