Refractive index metrology
Refractometry and interferometry in chemical analysis
Article REF: P500 V1
Refractive index metrology
Refractometry and interferometry in chemical analysis

Author : Claude VÉRET

Publication date: March 10, 2000 | Lire en français

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2. Refractive index metrology

2.1 Refraction methods

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2.1.1 Laws of refraction

The study of geometrical optics led to the notion of light rays propagating in a straight line, at constant speed, through homogeneous media. This led to the establishment of the simple Snell-Descartes laws of reflection and refraction.

Consider a light ray incident at the interface of two media of respective indices n 1 and n 2 (figure

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