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Are you thinking a (weather vane)
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The device you describe is usually called a "Weathervane", and it indicates the current direction of the wind. In early weather forecasting, watching changes in the direction of the wind over time, along with changes in barometric pressure, could give a fairly good weather forecast over perhaps a six hour time frame.
Modern weather stations usually also include a small propeller based device on the vane that measures wind speed. To measure the wind speed correctly requires that the propeller be oriented in the direction of the wind, which the vane achieves nicely .
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The weather tool that rotates on a pole is called an Anemometer. Anemometers measure wind speed.
What else can I help you with?
How does a top rotate?
it does not rotates
What is weather vane?
It is an instrument for finding wind direction. They are usually found on the top of church spires, or tall building. They can have various shapes, but all have an arrow which points into the wind direction. The tail of the vane may have something like, ship. or farmer with a scythe etc., to balance the vanes pointer against the wind flow. Do Not confuse with an 'Ananometer', which measures wind speed.
Why are the electric lines are on top of the pole?
Electric lines are on top of the pole to keep them out of the way.
What pole is at the top of the planet Earth?
The north pole is usually shown at the top of a map of Earth.
What do you call the top of the earth?
The map Earth is customarily drawn with the North Geographic Pole at the top.
How do you get to top of pole in Super Mario Brothers?
If your Mini Mario and there is a ledge near the pole, you could jump on top of it and get 1UP.
How do you unlock a dance pole to spin?
To unlock a dance pole to spin, locate the locking mechanism, which is usually a set screw or a knob at the top or bottom of the pole. Use the appropriate tool, often an Allen wrench, to loosen the screw or turn the knob counterclockwise. Once it's loose, you can check if the pole spins freely; if it does, you've successfully unlocked it. Always ensure the pole is securely set up and safe before use.
Why are day and night longer on the north pole?
In regions like the North Pole, the tilt of the Earth's axis leads to periods of continuous daylight in summer and continuous darkness in winter. This phenomenon occurs due to the angle at which sunlight reaches the Earth's surface, causing longer days and nights as the Earth rotates.
What is the purpose of the ball at the top of a flag pole?
The ball at the top of the flag pole is probably just there for decoration. Or, it may simply be there to balance out the pole... who knows? But according to my friends, it's also to keep the flag from flying off the pole, too.
What outer planet is tilted on its side and rotates from top to bottom?
Uranus
Does the moon have a north and south pole?
Tides are greatest at places on earth where the moon (and the sun) pass directly over. At the right time of year, when the moon and sun basically follow the equator, there will be no tides at the poles. At other times there will be some, though very little tidal action at the poles.
Is the North Pole actually the South Pole?
No, the North Pole and South Pole are not the same. The North Pole is located at the top of the Earth, while the South Pole is at the bottom. They are opposite ends of the Earth's axis.
