Fabry-Barot method

Fabry-Barot method

[fä′brē bə′rō ‚meth·əd]
(optics)
Method of determining the index of refraction of a prism in which the prism is set up so that the incident beam is perpendicular to the emergent face, and the index of refraction is calculated from the angle of the prism and the angle of deviation.