Chirping is welcome in birds but not in fusion devices

spaceexp:

Plainsboro NJ (SPX) Mar 20, 2018

Birds do it and so do doughnut-shaped fusion facilities called “tokamaks.” But tokamak chirping – a rapidly changing frequency wave that can be far above what the human ear can detect – is hardly welcome to researchers who seek to bring the fusion that powers the sun and stars to Earth. Such chirping signals a loss of heat that can slow fusion reactions, a loss that has long puzzled scientists.
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