Anemometer beam exits reflect, or backscatter, the light back into a detector, where it is measured relative to the original laser beam. 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. Ultrasonic anemometers, first developed in the 1950s, use ultrasonic sound waves to measure wind velocity. They measure wind speed based on the time of flight of sonic pulses between pairs of transducers. Measurements from pairs of transducers can be combined to yield
What Does the K Stand For? feel less like real people than excuses to weave in a few good dad jokes". Overall, Elan found, "What lifts the show are the elements of diaspora life weaved throughout, as when Aunty Princess visits from Nigeria and accuses Virginia [Stephen's mother] of cultural betrayal ('You have adopted too many fine and fancy British ways'). Stephen defends the family by suggesting she should 'go back home', prompting him to reflect that he has turned into his own racist enemy. It's unexpectedly thoughtful stuff, suggesting the third series may be even better." What Does the K Stand For? What Does the