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Light - Coggle Diagram
Light
Properties
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Light travels at a speed of 300,000,000 ms-1 in vacuum
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Refraction
Definition
The [change in direction of light // bending of light ray] as it passes from one medium into another due to the difference in the speed of light in different media.
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Laws
Incident ray, refracted ray and normal at point of incidence all lie in the same plane.
Ratio of sin(angle of incidence) to sin(angle of refraction) is the ratio of refractive indices of both media. (Snell's Law)
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Applications
Misperception of straight rod in water (to our brain, rod is bent)
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Rainbow Formation (refraction of light of differing wavelengths in water droplets cause rainbow to be seen)
Reflection
Laws
Incident ray, reflected ray and normal at point of incidence all lie on the same plane.
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