Waves
How Doppler Radar Decodes the Sky
Inside 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
Waves
Sound Waves & Active Noise Cancellation
How 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