Feedback cycle - Revision history

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	<onlyinclude>A '''feedback cycle''' is some cyclic structure of cause and effect that causes some initial change in the system to run through a series of secondary effects, eventually influencing the initial change in some way.</onlyinclude><ref>Thwink. (November 29, 2015). ''Feedback Loop'' [Online]. Available: http://www.thwink.org/sustain/glossary/FeedbackLoop.htm</ref> There are two major types of feedback cycles or loops. The first is a [[negative feedback\|'''negative feedback''']] or a balancing loop. The second type is a [[positive feedback\|'''positive feedback''']] or reinforcing loop. Figures illustrating the different feedback cycles are shown below.		<onlyinclude>A '''feedback cycle''' is some cyclic structure of cause and effect that causes some initial change in the system to run through a series of secondary effects, eventually influencing the initial change in some way.</onlyinclude><ref>Thwink. (November 29, 2015). ''Feedback Loop'' [Online]. Available: http://www.thwink.org/sustain/glossary/FeedbackLoop.htm</ref> There are two major types of feedback cycles or loops. The first is a [[negative feedback\|'''negative feedback''']] or a balancing loop. The second type is a [[positive feedback\|'''positive feedback''']] or reinforcing loop. Figures illustrating the different feedback cycles are shown below.

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	==References==		==References==
	{{reflist}}		{{reflist}}
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[[Category:Done 2016-01-15]]
<onlyinclude>A '''feedback cycle''' is some cyclic structure of cause and effect that causes some initial change in the system to run through a series of secondary effects, eventually influencing the initial change in some way.</onlyinclude><ref>Thwink. (November 29, 2015). ''Feedback Loop'' [Online]. Available: http://www.thwink.org/sustain/glossary/FeedbackLoop.htm</ref> There are two major types of feedback cycles or loops. The first is a [[negative feedback|'''negative feedback''']] or a balancing loop. The second type is a [[positive feedback|'''positive feedback''']] or reinforcing loop. Figures illustrating the different feedback cycles are shown below.

<gallery mode=traditional caption="Feedback Cycles" widths="350px" heights="380px" >
File:negativefeedbackloop1.png|<center>'''Negative Feedback - Stabilizing Loop''' </center>Figure 1. A flow chart to show the general process of some negative feedback, with an initial "push" to the system causing other effects that keep the system in its original state.<ref name=im>''Created internally by a member of the Energy Education team.''</ref>
File:positivefeedbackloop1.png|<center>'''Positive Feedback - Destabilizing Loop'''</center>Figure 2. A flow chart to show the general process of some positive feedback, with an initial "push" to the system causing other effects that increase the movement of the system away from its original state.<ref name=im>''Created internally by a member of the Energy Education team.''</ref>
</gallery>

==Positive Feedback Cycle==
:: [[positive feedback|''main page'']]
Positive feedback cycles are cycles where some initial disturbance causes a series of secondary effects that, over the course of the cycle, return to cause some increase in the magnitude of the initial disturbance. This causes some initial change to grow larger and moves the system out of its original equilibrium state. This is the reason it is called a reinforcing loop, as changes move through the cycle to magnify and reinforce the initial change. Positive loops such as these tend to be destabilizing, pushing systems out of equilibrium and causing fairly drastic overall change from a disturbance.

In the [[climate]] system, positive feedback cycles are incredibly important. These [[positive climate feedback]]s include cycles such as the ice-[[albedo]] feedback and [[carbon]] release. To learn more about these specific feedbacks, click [[positive climate feedback|here]].

==Negative Feedback Cycle==
:: [[negative feedback|''main page'']]
Negative feedback cycles are cycles where some initial disturbance causes a series of secondary effects that, over the course of the cycle, return to minimize the magnitude of the initial disturbance. This causes some initial change to grow smaller, keeping the system from moving out of its equilibrium state. This is the reason it is called a balancing loop, as it moves to maintain the balance of a system. Negative loops such as these tend to be stabilizing, as they keep systems in a state of equilibrium by minimizing some initial effect to keep the system in the same initial state despite some "push".

In the climate system, negative feedback cycles are incredibly important. These [[negative climate feedback]]s include cycles such as the loop of cloud creation caused by evaporation. To learn more about this and other specific feedback cycles, click [[negative climate feedback|here]].

==References==
{{reflist}}