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Listening to Lightning – Sound Recording of High Frequency Electromagnetic Waves Captured by the European Space Agency’s Megnetometer

This is only 75 seconds long but I could just as easily put it on loop and fall asleep to sounds like this:

Electromagnetic waves travelling upward from a lightning strike undergo dispersion in the ionosphere. High frequencies travel faster and arrive before the longer waves, giving rise to a whistling tone from high to low recorded by our magnetometer.

Credits ESA/CNES/Leti/IPGP/Swarm DISC


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