Last Update 14/ 01/ 2005
in Esperanto/ in English/ in Portuguese
You are invited to click in the figure either at first on a Miller indices button and then on the matching button with the three letters, either in the reverse sequence. If a smiling face is issued it means the correct Miller indices for that respective dodecahedron face plane marked with the same letters on the distorted perspective figure was selected, according to the given orientation. The Cartesian axes are presented in white and the positive side is indicated by x, y and z. Only the 24 first wrong matches of Miller indices and plane are scored by unhappy faces. The standard time is displayed after the game is done, when the complete set of 12 planes was correctly indexed.
Exercises
1) Write the Miller indices of a dodecahedron face plane parallel to plane (1 1 0).
2) Write the Miller indices of a dodecahedron face plane perpendicular to plane (1 1 0).
3) Write the Miller indices for a set of dodecahedron face planes related by a 3 fold axis.
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