(also optical indicatrix)
Definition of indicatrix in English:
noun (plural indicatrices /-triˌsēz/)Crystallography
An imaginary ellipsoidal surface whose axes represent the refractive indices of a crystal for light following different directions with respect to the crystal axes.
- Other contributions to differential geometry which occur in this work include his invention of the ‘Dupin indicatrix’ which gives an indication of the local behaviour of a surface up to the terms of degree two.
Definition of indicatrix in:
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