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
What Does the K Stand For? sitcom". Writing in "The Guardian" in February 2015, Priya Elan judged that, "Standup comedian Stephen K Amos's jaunty sitcom "What Does The K Stand For?" (Radio 4) reaches the end of its second series with possibly the best episode yet. With shades of Chris Rock's "Everybody Hates Chris", Amos takes us back to his 80s childhood, growing up gay and black in a dysfunctional household". However, he added, "Playing it broad by mixing farce with double entendres, the sitcom is slightly uneven: although the family are drawn with wit and sympathy, minor characters like the actress turned teacher Miss Bliss