Matches in DBpedia 2016-04 for { ?s ?p "The crystallographic restriction theorem in its basic form was based on the observation that the rotational symmetries of a crystal are usually limited to 2-fold, 3-fold, 4-fold, and 6-fold. However, quasicrystals can occur with other diffraction pattern symmetries, such as 5-fold; these were not discovered until 1982 by Dan Shechtman.Crystals are modeled as discrete lattices, generated by a list of independent finite translations (Coxeter 1989)."@en }
Showing triples 1 to 2 of
2
with 100 triples per page.
- Crystallographic_restriction_theorem comment "The crystallographic restriction theorem in its basic form was based on the observation that the rotational symmetries of a crystal are usually limited to 2-fold, 3-fold, 4-fold, and 6-fold. However, quasicrystals can occur with other diffraction pattern symmetries, such as 5-fold; these were not discovered until 1982 by Dan Shechtman.Crystals are modeled as discrete lattices, generated by a list of independent finite translations (Coxeter 1989).".
- Q3527223 comment "The crystallographic restriction theorem in its basic form was based on the observation that the rotational symmetries of a crystal are usually limited to 2-fold, 3-fold, 4-fold, and 6-fold. However, quasicrystals can occur with other diffraction pattern symmetries, such as 5-fold; these were not discovered until 1982 by Dan Shechtman.Crystals are modeled as discrete lattices, generated by a list of independent finite translations (Coxeter 1989).".