#physics **Harmonic resonance** Or you could just call it resonance. This is the cause of most failures, because it isn't easy to analyse. I find most people treat it without the laws of physics.

*Engineers with the company and other organizations developed a solution to mitigate “a rare system phenomenon involving harmonic resonance” in the engines, which is expected to clear the way for newly-built F-35s and other affected fighters to fly again, the JPO said in a statement Friday.*