Anemometer turbines usually requires a refresh rate of wind speed measurements of 3 Hz, easily achieved by sonic anemometers. Three-dimensional sonic anemometers are widely used to measure gas emissions and ecosystem fluxes using the eddy covariance method when used with fast-response infrared gas analyzers or laser-based analyzers. Two-dimensional wind sensors are of two types: Acoustic resonance anemometers are a more recent variant of sonic anemometer. The technology was invented by Dr Savvas Kapartis and patented in 2000. Whereas conventional sonic anemometers rely on time of flight measurement, acoustic resonance sensors use resonating acoustic (ultrasonic) waves within a small purpose-built cavity in
The Fox (What Does the Fox Say?) "YouTube Rewind: What Does 2013 Say?", a homage paid by YouTube to the year's top videos. The song has been featured for multiple times on television. It was used in an advertisement for the Fox Network featuring clips of FOX programs and actors singing the song. On 28 October, four contestants on the seventeenth season of "Dancing with the Stars" performed the song for the "Team Dance" week under the team name "Foxing Awesome", scoring a perfect 30. NBC's "Saturday Night Live" cast-member Jay Pharoah and host Kerry Washington appeared in a parody video of the song titled "My Girl"