WavesHow Doppler Radar Decodes the SkyInside the rotating dome that spots a tornado before it touches down — how a shift in the frequency of a returning microwave pulse reveals a storm's wind speed and direction, not just where the rain is falling.Open Reading Passage
WavesSound Waves & Active Noise CancellationHow can adding more sound to a noisy airplane cabin make it quieter? A close look at superposition, phase, and the inverted sound wave that flattens the constant drone of a jet engine into near silence.Open Reading Passage
WavesLost and Found: How GPS Satellites Know Exactly Where You AreHow does a little blue dot find you on a back road with no signs? Falling clocks 20,200 km overhead, microwaves racing at the speed of light, and four overlapping spheres turn time into distance — plus why tall buildings make the dot wander.Open Reading Passage
