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2. Index metrology
2.1 Refraction methods
A light ray incident on the separating surface of two media 1 and 2, with different indices n
1
and n
2
, undergoes a change of direction, or refraction, the value of which is determined by applying Descartes' law formula (figure
1
):
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Index metrology
Using refractometers
References
Manufacturers and distributors (France)
(Non-exhaustive list)
Ateliers Cloup. http://www.cloup.fr
Carl Zeiss (Germany) distributed by : Carl Zeiss SA. http://www.zeiss.com
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