[permalink] [id link]
Cup-type anemometer with vertical axis, a sensor on a remote meteorological station deployed on Skagit Bay, Washington ( state ) | Washington July – August, 2009.
from
Wikipedia
Some Related Sentences
anemometer and with
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.
In the Robinson anemometer the axis of rotation is vertical, but with this subdivision the axis of rotation must be parallel to the direction of the wind and therefore horizontal.
Laser Doppler anemometers use a beam of light from a laser that is divided into two beams, with one propagated out of the anemometer.
James Lind's anemometer of 1775 consisted simply of a glass U tube containing a liquid manometer ( pressure gauge ), with one end bent in a horizontal direction to face the wind and the other vertical end remains parallel to the wind flow.
The scale was made a standard for ship's log entries on Royal Navy vessels in the late 1830s and was adapted to non-naval use from the 1850s, with scale numbers corresponding to cup anemometer rotations.
John Thomas Romney Robinson: Invented the cup anemometer and measured the position of Armagh with rockets.
Wind speed is now commonly measured with an anemometer but can also be classified using the older Beaufort scale which is based on people's observation of specifically defined wind effects.
Named for the rainy weather of Seattle, the team uses many weather-related icons: the team mascot is Doppler, a maroon-furred creature with a cup anemometer on its head ; the theme song for Storm home games is AC / DC's " Thunderstruck "; and its newsletter is called Stormwatch.
The collision with the anemometer took the starboard wing off the Miles Falcon Six he was travelling in, and killed pilot Malcolm " Mac " McGregor.
In the atmospheric sciences, in situ refers to obtained through direct contact with the respective subject, such as a radiosonde measuring a parcel of air or an anemometer measuring wind, as opposed to remote sensing such as weather radar or satellites.
Modern aerovanes combine the directional vane with an anemometer ( a device for measuring wind speed ).
At Corvallis, Oregon, an inland location in the Willamette Valley, one-minute average winds reached, with a gust to, before the anemometer was destroyed and the observation tower began flying apart, forcing the abandonment of the station.
The closest anemometer, in the town of Diepenbeek, recorded gusts above 80 km / h ( 50 mph ), with reports of large hail and the possibility of a tornado.
* electrical navigational instruments borrowed from aeronautics with repeaters for windvane and anemometer, Whirlwind ( 1930 )
His fascination with weather dates to his childhood ; he reportedly carried an anemometer around with him as a teenager to measure wind speed.
An anemometer in Acapulco reported a wind gust of 59 mph ( 95 km / h ) with sustained winds of 46 mph ( 75 km / h ).
anemometer and vertical
The highly successful metal pressure tube anemometer of William Henry Dines in 1892 utilized the same pressure difference between the open mouth of a straight tube facing the wind and a ring of small holes in a vertical tube which is closed at the upper end.
Since the hurricane bent the anemometer 30 degrees from the vertical, it is possible the winds at Brownsville were underestimated.
anemometer and sensor
; MIS: The Meteorology Instrument System had a temperature sensor, a pressure sensor, a relative humidity sensor, an optical depth sensor ( ODS ) to compare the intensity of direct and scattered sunlight, and an ion anemometer used to detect ion current and atmosphere ionization.
The theory of operation of the hot wire mass airflow sensor is similar to that of the hot wire anemometer ( which determines air velocity ).
anemometer and on
Instead, the ratio of the speed of the wind and that of the cups, the anemometer factor, depends on the dimensions of the cups and arms, and may have a value between two and a little over three.
This type of anemometer is mostly used for middle-school level instruction which most students make themselves, but a similar device was also flown on Phoenix Mars Lander.
The great advantage of the tube anemometer lies in the fact that the exposed part can be mounted on a high pole, and requires no oiling or attention for years ; and the registering part can be placed in any convenient position.
An anemometer is installed on the tip of the building's mast ; the anemometer sits at 378 m ( 1, 240 ft ) above sea level.
It was based on the cooling rate of a small plastic bottle as its contents turned to ice while suspended in the wind on the expedition hut roof, at the same level as the anemometer.
The second-highest surface wind speed ever officially recorded is 372 km / h ( 231 mph ; 103 m / s ) at the Mount Washington ( New Hampshire ) Observatory in the US on 12 April 1934, using a heated anemometer.
The anemometer, specifically designed for use on Mount Washington, was later tested by the US National Weather Bureau and confirmed to be accurate.
An anemometer adjusts the height of the water based on the wind velocity.
At approximately 10: 00, the helicopter's tail rotor struck the anemometer on the top of the lighthouse, and as a result the aircraft crashed into the sea.
An anemometer was installed on the roof to measure wind speed so the terraces ’ canvas awning can be retracted and does not get ripped off the penthouse ’ s exalted façade.
anemometer and meteorological
To the extent there is a difference, a weather gauge can be a form of meteorological instrumentation for measuring weather quantitatively, such as a rain gauge, thermometer, anemometer or barometer.
The meteorological station in Chittagong, to the east of where the storm made landfall, recorded winds of before its anemometer was blown off at about 2200 UTC.
anemometer and station
An anemometer is a device for measuring wind speed, and is a common weather station instrument.
anemometer and .
The first known description of an anemometer was given by Leon Battista Alberti around 1450.
Anemometers can be divided into two classes: those that measure the wind's speed, and those that measure the wind's pressure ; but as there is a close connection between the pressure and the speed, an anemometer designed for one will give information about both.
A simple type of anemometer, invented ( 1846 ) by Dr. John Thomas Romney Robinson, of Armagh Observatory.
When Robinson first designed his anemometer, he asserted that the cups moved one-third of the speed of the wind, unaffected by the cup size or arm length.
Every previous experiment involving an anemometer had to be repeated.
The three cup anemometer developed by the Canadian John Patterson in 1926 and subsequent cup improvements by Brevoort & Joiner of the USA in 1935 led to a cupwheel design which was linear and had an error of less than 3 % up to.
The three cup anemometer also had a more constant torque and responded more quickly to gusts than the four cup anemometer.
The three cup anemometer was further modified by the Australian Derek Weston in 1991 to measure both wind direction and wind speed.
The other forms of mechanical velocity anemometer may be described as belonging to the windmill type or propeller anemometer.
Drawing of a laser anemometer.
When the particles are in great motion, they produce a Doppler shift for measuring wind speed in the laser light, which is used to calculate the speed of the particles, and therefore the air around the anemometer.
A common anemometer for basic use is constructed from a ping-pong ball attached to a string.
Helicoid propeller anemometer incorporating a wind vane for orientation.
Though the Lind was not the first it was the most practical and best known anemometer of this type.
0.187 seconds.