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Get the Philadelphia, PA local weather forecast by the hour and the next 10 days. ... The Weather Channel's Stephanie Abrams told "CBS Mornings" that La Niña and high ocean temperatures could ...
Get the Philadelphia, PA local weather forecast by the hour and the next 10 days. ... TV Line. Dabney Coleman, Emmy winner and star of '9 to 5' and 'Tootsie,' dead at 92. Entertainment.
Get the Philadelphia, PA local weather forecast by the hour and the next 10 days. ... Baltimore bridge collapse: Second temporary channel opened, rough weather slows debris removal.
Doppler effect. The emitted signal toward the car is reflected back with a variation of frequency that depends on the speed away/toward the radar (160 km/h). This is only a component of the real speed (170 km/h). The Doppler effect (or Doppler shift), named after Austrian physicist Christian Doppler who proposed it in 1842, is the difference ...
Raymond Pierrehumbert. Fred Sanders. Joshua Michael Aaron Ryder Wurman (born October 1, 1960) is an American atmospheric scientist and inventor noted for tornado, tropical cyclone, and weather radar research, the invention of DOW and bistatic radar multiple-Doppler networks.
Pulse-Doppler radar. A pulse-Doppler radar is a radar system that determines the range to a target using pulse-timing techniques, and uses the Doppler effect of the returned signal to determine the target object's velocity. It combines the features of pulse radars and continuous-wave radars, which were formerly separate due to the complexity of ...
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