An anemometer is used to measure wind power, or more precisely wind velocity and/or pressure. The modern anemometer is an electrical device that calculates data that is communicated to it by some other instrument e.g. a wind vane. A high quality and modern anemometer measures both the wind velocity and pressure. There are however different kinds that performs this task differently.
Anemometer comes from the word anemos and is Greek for wind. This is an old instrument that was invented in the 15Th century, by a man named Leon Battista Alberti. His model consisted of a disk rotated by the force of the wind. This model was of course mechanical as opposed to the modern electrical. A man named Robert Hooker, later on re-invented the anemometer and is often mistakenly considered to be the inventor of this instrument.
The anemometer is often combined with a wind vane when utilized on wind mills. The wind vane communicates the wind speed and direction to the anemometer that makes the calculations and passes the data into wind turbine controller, in turn; the controller tells the yaw motor to turn the nacelle so that the rotor faces the wind.
Anemometers can be...