We'd like to use analytics cookies to understand which symbols people look up, so we know what to research next. They are not used for advertising and we set none of them unless you say yes. What we store.
A rotation symbol carrying tails.
Also known as: Helical axis symbol, Screw rotation mark, Two-one screw axis symbol
The graphical symbol for a screw axis on a crystallographic space group diagram, a rotation combined with a translation along the same axis.
Marks a screw axis, a rotation combined with a translation along the axis of rotation.
Contexts: Laboratory
Adds tails to the pure rotation symbol rather than using a new figure, so a reader who knows the rotation family can read the screw family without learning new shapes.
Contexts: Laboratory
The solid figure of a rotation axis with small tails added to its points, the tails marking the translation along the axis.