Ads
related to: anemometer speed of rotation timezoro.com has been visited by 100K+ users in the past month
Search results
Results from the WOW.Com Content Network
A hemispherical-cup anemometer of the type invented in 1846 by John Thomas Romney Robinson. In meteorology, an anemometer (from Ancient Greek άνεμος (ánemos) 'wind' and μέτρον (métron) 'measure') is a device that measures wind speed and direction. It is a common instrument used in weather stations.
Rotational frequency, also known as rotational speed or rate of rotation (symbols ν, lowercase Greek nu, and also n), is the frequency of rotation of an object around an axis. Its SI unit is the reciprocal seconds (s −1 ); other common units of measurement include the hertz (Hz), cycles per second (cps), and revolutions per minute (rpm).
Mast rotation - many racing multihulls have a mast that can be rotated, so the anemometer reading needs to be corrected by the angle of rotation of the mast; Heel angle - this is a simple trigonometric correction; Upwash from the sails - the airflow around the top of the mast is distorted by the presence of the sails.
The rotation rates of bacterial flagella have been measured to be 10 200 rpm (170 Hz) for Salmonella typhimurium, 16 200 rpm (270 Hz) for Escherichia coli, and up to 500 000 rpm (1700 Hz) for polar flagellum of Vibrio alginolyticus, allowing the latter organism to move in simulated natural conditions at a maximum speed of 540 mm/h.
Anemometer (measures wind speed) ... (speed of rotation) Tachymeter; ... Parking meter measures time a vehicle is parked at a particular spot, ...
Universal time tracks the Earth's rotation in time, which performs one revolution in about 24 hours. The Earth's rotation is uneven, so UT is not linear with respect to atomic time. It is practically proportional to the sidereal time, which is also a direct measure of Earth rotation. The excess revolution time is called length of day (LOD).
The speed of rotation is given by the angular frequency (rad/s) or frequency (turns per time), or period (seconds, days, etc.). The time-rate of change of angular frequency is angular acceleration (rad/s 2), caused by torque. The ratio of torque to the angular acceleration is given by the moment of inertia.
At one physical point on the tower, at time 1, eddy 1 moves parcel of air c 1 down at speed . Then, at time 2, eddy 2 moves parcel c 2 up at speed . Each parcel has gas concentration, pressure, temperature, and humidity. If these factors, along with the speed are known, we can determine the flux.
Ads
related to: anemometer speed of rotation timezoro.com has been visited by 100K+ users in the past month