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Unit 2.8 - Three Aspects of the Hexagonal Crystal System

Unit 2.8 of the course The Fascination of Crystals and Symmetry Additonal resources at: https://crystalsymmetry.wordpress.com... The hexagonal crystal system is a bit challenging to manage, a little less clear than the others. In this unit we want to answer three questions: (1) In which way are hexagonal unit cells assembled correctly? (2) To how many unit cells does an atom on the corner of a hexagonal primitive cell belong? (3) And where is the 6-fold axis of rotation located? At the center of the cell or at the corners? -------------- If you prefer books instead of videos, have a look at: https://www.amazon.com/Introduction-C...