Open AccessFrom teaching experience. VIII. Grid ornaments
Author(s) -
Yu. L. Voytekhovsky
Publication year - 2021
Publication title -
vestnik geonauk
Language(s) - English
Resource type - Journals
ISSN - 2712-7761
DOI - 10.19110/geov.2021.7.2
Subject(s) - ornaments , parallelogram , grid , symmetry (geometry) , space (punctuation) , geometry , theoretical physics , computer science , mathematics , physics , geography , artificial intelligence , archaeology , robot , style (visual arts) , operating system
After 7 symmetry groups of borders, 17 symmetry groups of grid ornaments are the next step on the way to 230 space symmetry groups in the university course of crystallography. A simple derivation of grid ornaments is proposed, combining the search for 10 flat clusters and their translations in 5 parallelogram grids. Analysis of grid ornaments in the urban landscape (artistic mosaics, wall claddings, floorings, etc.) draws students to the actual problem of the prevalence of 230 space symmetry groups in minerals.