A negative feedback loop is when small changes in the input to a system result in effects that reduce the initial difference. Typically negative feedback loops lead to stable, but unreactive systems, and smooth geometric shapes.
The opposite of negative feedback is positive feedback.
Used in Chap. 7: page 107
Centrifugal governor – Image from "Discoveries & Inventions of the Nineteenth Century" by R. Routledge, 13th edition, published 1900. Public Domain, Wikimedia Commons
