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 Bee Do? the bomb that Slater set explodes, badly burning one of them. "What Does The Bee Do?" is a children's poem from the late 1800s by Christina Rossetti. Margaret Schroeder's daughter recites it in the episode. "IGN" gave the episode a score of 8.5 out of 10, saying that it "effortlessly hits that sweet spot between advancing the plot while developing characters, much in the same way that the Season 2 premiere did." "The A.V. Club" rated the episode an "A-". The episode was watched by 2.546 million viewers. It fell two tenths, to 1.0 million adults 18-49 rating. What Does