Refractive Index: Difference between revisions
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Latest revision as of 09:41, 17 September 2026
Refractive Index (of a medium)
Ratio of the velocity of light in vacuum to the velocity of light in the medium.
Symbol: n
Note: This index is equal to the ratio of the sines of the angles of incidence (?1) and refraction (?2) when a ray crosses the surface separating vacuum and medium.
Reference: C.I.E. (modified)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
