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The duration of adjustment depends on the strength of the negative feedback to the initial shock. Where a shock initially induces positive feedback such as thermal runaway , the new equilibrium can be far from the old one, and can take a long time to reach. In some dynamic systems , the end-state cannot be determined from the shock. The principle is typically used to describe closed negative-feedback systems, but applies, in general, to thermodynamically closed and isolated systems in nature, since the second law of thermodynamics ensures that the disequilibrium caused by an instantaneous shock must have a finite half-life. While well rooted in chemical equilibrium and extended into economic theory, Le Chatelier's principle can also be used in describing mechanical systems in that a system put under stress will respond in such a way as to reduce or minimize that stress. Moreover, the response will generally be via the mechanism that most easily relieves that stress. Shear pins and other such sacrificial devices are design elements that protect systems against stress applied in undesired manners to relieve it so as to prevent more extensive damage to the entire system, a practical engineering application of Le Chatelier's principle. Chemistry[ edit ] Effect of change in concentration[ edit ] Changing the concentration of a chemical will shift the equilibrium to the side that would counter that change in concentration. The chemical system will attempt to partly oppose the change affected to the original state of equilibrium.

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David H. Brainard and Brian A. Wandell J. A 17 11 References You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA Colour And Temperature Experiment, or as an authorized user of Tempreature institution. Contact your librarian or system administrator or Login to access OSA Member Subscription Data Availability Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon here request.

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Cited By You do not have subscription access to this journal. Cited by links are available to subscribers only. Contact your librarian or system administrator or Login to access OSA Member Subscription Figures 12 You do not have subscription access to this journal. Figure files are available to subscribers only.

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