Bistability

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

In a dynamical system, bistability means the system has two stable equilibrium states. A bistable structure can be resting in either of two states. An example of a mechanical device which is bistable is a light switch. The switch lever is designed to rest in the "on" or "off" position, but not between the two.

Excerpt from the Wikipedia article “Bistability”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Georg Wiora (Dr. Schorsch), CC BY-SA 3.0, via Wikimedia Commons.