Birdwatch Note Rating
2023-02-12 00:25:15 UTC - HELPFUL
Rated by Participant: 101CF18B073C48AD9094E6191AF55D35DCA3C3E50C920C565A0BD6544EDA21AD
Participant Details
Original Note:
High-frequency Active Auroral Research Program (HAARP) is a scientific facility for studying the ionosphere that directs microwaves (2.7 to 10 MHz) into the upper atmosphere. https://www.britannica.com/topic/HAARP Seismic waves are infrasonic (~20Hz) waves travelling underground at great distances. https://www.britannica.com/science/infrasonics
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