Difference between revisions of "Mesh"
From Online Dictionary of Crystallography
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| + | <font color="red">Masche</font> (''Ge''). <font color="green">Trama</font> (''Sp''). | ||
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The term '''mesh''' is commonly used with two meanings: | The term '''mesh''' is commonly used with two meanings: | ||
*In a two-dimensional pattern possessing rotational symmetry, the [[Symmetry element|rotation points]] constitute the nodes of a net and divide the plane into regions that are called ''meshes''. The number of meshes meeting at any rotation point equals twice the order of the rotation at that point. | *In a two-dimensional pattern possessing rotational symmetry, the [[Symmetry element|rotation points]] constitute the nodes of a net and divide the plane into regions that are called ''meshes''. The number of meshes meeting at any rotation point equals twice the order of the rotation at that point. | ||
Latest revision as of 12:51, 16 November 2017
Masche (Ge). Trama (Sp).
The term mesh is commonly used with two meanings:
- In a two-dimensional pattern possessing rotational symmetry, the rotation points constitute the nodes of a net and divide the plane into regions that are called meshes. The number of meshes meeting at any rotation point equals twice the order of the rotation at that point.
- A two-dimensional unit cell is also sometimes called a mesh.
According to Loeb (1971), only the first use would be correct.
Reference
- Loeb, A. B. (1971). Color and symmetry. New York: Wiley-Interscience.