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Answer by nammerkage for What causes light to refract?
This gif shows why with Huygens–Fresnel principle:Source
View ArticleAnswer by anna v for What causes light to refract?
This is too long for a comment, and is supplementary to the answer by John.One should not confuse photons with classical electromagnetic light.Photons are not light. They are elementary particles in...
View ArticleAnswer by JEB for What causes light to refract?
There an many ways to look at this problem. I am going to add, light refracts because its path satisfies Fermat's Principle : "light travels between two points along the path that requires the least...
View ArticleAnswer by John Rennie for What causes light to refract?
The reason that light travels more slowly in a dielectric is because it interacts with the electrons in that dielectric.Light has an oscillating electric field, and if any charged particle is in the...
View ArticleAnswer by DK2AX for What causes light to refract?
The reason for refraction is the different speed of light in different media. This speed is determined by the refractive index $n$, which in turn can be calculated from the relative permittivity and...
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What causes light to refract?
The common answer to this question is that light refracts because its speed changes in different materials. But this means that the photons has internal attraction between each other. Is that the case?...
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