Cognitive Scaffold

Preparing your thinking workspace

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MENTAL MODEL · M5739

Snell's Law

Snell's Law
CollaborateHigh supportCommunication Studies
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

When light enters a different medium, its direction of propagation bends (refraction). The higher the refractive index of the medium, the slower the speed of light and the greater the bending angle.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Path correction for environmental adaptation. When entering a new 'medium' (e.g., a new industry or culture), your 'travel speed' inevitably slows down. To maintain efficiency (Fermat's principle), you must change your 'travel angle' (strategy). Insisting on going straight when a turn is needed is inefficient.

anchor

Anchor fast decisions

Describes the refraction of light at the interface between two media: the ratio of the sines of the angles of incidence and refraction is equal to the inverse ratio of the refractive indices (n1 sinθ1 = n2 sinθ2). It is a fundamental principle of geometric optics.

MINIMUM ACTION

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Source support: Explicit

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    zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E6%96%AF%E6%B6%85%E5%B0%94%E5%AE%9A%E5%BE%8BZH · Explicit
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