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negative feedback . [ ] [ ] both concepts play an important role in science and engineering, including biology, chemistry, and cybernetics . mathematically, positive feedback is defined as a positive loop gain around a closed loop of cause and effect. [ ] [ ] that is, positive feedback is in phase with
instability . when the loop gain is positive and above , there will typically be exponential growth , increasing oscillations , chaotic behavior or other divergences from equilibrium . [ ] system parameters will typically accelerate towards extreme values, which may damage or destroy the system, or may end with...
https://en.wikipedia.org/wiki/Positive_feedback