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Caution Fill in all cells except the one corresponding to the parameter to be calculated. Choose all parameters unit. Angles and diffraction order are algebraic (the diffraction order being also an integer). All other parameters are strictly positive. Angle positive way is counterclockwise according to the round arrow provided for this purpose.
ni and nr can be either numeric values (larger than or equal to 1) or references of glasses from the catalog. If references of glasses are selected, the calculation considers the refraction indexes of these glasses at the wavelength lam defined in the current page.
