An anemometer is an instrument that measures wind speed.
This type of anemometer has a spinning wheel.
The stronger the wind blows, the faster the wheel rotates.
The anemometer counts the number of rotations, which is used to calculate wind speed.
An anemometer is an instrument that measures wind speed and wind pressure.
Anemometers are important tools for meteorologists, who study weather patterns.
They are also important to the work of physicists, who study the way air moves.
The most common type of anemometer has three or four cups attached to horizontal arms.
The arms are attached to a vertical rod. As the wind blows, the cups rotate, making the rod spin.
The stronger the wind blows, the faster the rod spins. The anemometer counts the number of rotations, or turns, which is used to calculate wind speed.
Because wind speeds are not consistent—there are gusts and lulls—wind speed is usually averaged over a short period of time.
A similar type of anemometer counts the revolutions made by windmill-style blades. The rod of windmill anemometers rotates horizontally.
Anemometers are used at almost all weather stations, from the frigid Arctic to warm equatorial regions. Wind speed helps indicate a change in weather patterns, such as an approaching storm, which is important for pilots, engineers, and climatologists.
An anemometer is an instrument that measures wind speed and wind pressure.
Anemometers are important tools for meteorologists, who study weather patterns.
They are also important to the work of physicists, who study the way air moves.