# Spherical Systems

- Page ID
- 17646

The spherical

Hermann-Mauguin symbol | Short Hermann-Mauguin symbol | Schönfliess symbol | ||
---|---|---|---|---|

\(\infty\,A_{\infty}\) | \(2\infty\) | K |
\(\infty\) | sphere filled with an optically active liquid |

\(\infty\frac{A_{\infty}}{M}C\) | \(m\bar\infty,\frac{2}{m}\bar\infty\) | K_{h} |
\(\infty\) | stationary sphere |

## History

The groups containing isotropy axes were introduced by P. Curie (1859-1906) in order to describe the symmetry of physical systems (Curie P. (1884). *Sur les questions d'ordre: répétitions. Bull. Soc. Fr. Minéral.*,

**7**, 89-110; Curie P. (1894).

*Sur la symétrie dans les phénomènes physiques, symétrie d’un champ électrique et d’un champ magnétique. J. Phys. (Paris)*,

**3**, 393-415.).

## See also

Section 10.1.4 of *International Tables of Crystallography, Volume A*

Section 1.1.4 of *International Tables of Crystallography, Volume D*