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|Wysłany: Wto 5:08, 17 Maj 2011 Temat postu: climate jordan Anemometer
mometer comes from the word anemos and is Greek for wind. This is an age instrument that was invented in the 15’Th centenary,[link widoczny dla zalogowanych],[link widoczny dla zalogowanych], by a man labeled Leon Battista Alberti. His model consisted of a disk rotated by the compel of the wind. This model was of way mechanical as disapproved to the modern electrical. A man appointed Robert Hooker,[link widoczny dla zalogowanych],[link widoczny dla zalogowanych], afterward ashore re-invented the anemometer and is constantly mistakenly thought 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 master,[link widoczny dla zalogowanych], in turn; the master tells the yaw motor to rotate the nacelle so that the rotor faces the wind.
Anemometers can be divided in 2 classes,[link widoczny dla zalogowanych], there are those that measure the velocity of the wind and there are those that measure the pressure of the wind. A high quality and modern anemometer will give message almost either of these quantities. Down under there is a account of anemometers that reaches the same goal by using assorted technologies.
These are the kind that is additional to a wind mills.
This type uses a fine wire heated up to some temperature upon the ambient. When the wind flows past the wire and cools the cable down a relationship can be acquired and a calculation produces correct file.
Laser Doppler anemometers
Uses a laser beam to measaure the air speed and way.
The simplest kind of them entire and invented in 1846 by John Thomas Romney Robinson of Armagh Observatory
Uses sound waves to measure wind speed and direction.
This is the simplest type of anemometers and consists of a round or square faced into the wind. This kind of instrument is no the most accurate.
The wind vane also known for weather vane namely a movable apparatus that is spliced an hoisted thing such for a roof alternatively wind mill. It can be secondhand standalone alternatively mounted spliced to some additional instrument such as one anemometer. The wind vane has to be located well above the ground to obtain an precise perusing.
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