English Dictionary

Snell's law

/snɛlz lɔ/

noun

(optics) the law that, for a ray incident on the interface of two media, the sine of the angle of incidence times the index of the refraction of the first medium is equal to the sine of the angle of refraction times the index of refraction of the second medium

Snell's law explains the bending of light when it passes from one medium to another.

意味（1）

(optics) the law that, for a ray incident on the interface of two media, the sine of the angle of incidence times the index of the refraction of the first medium is equal to the sine of the angle of refraction times the index of refraction of the second medium