![[Figure 5]](os0097fig5mag.jpg)
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Figure 5
The coordinate system ( ![[\xi_1^*,\xi_2^*,\xi_3^*]](teximages/os0097fi80.gif){kind=small} ) is obtained from the coordinate system (![[\xi_1,\xi_2,\xi_3]](teximages/os0097fi22.gif){kind=small} ) through a counterclockwise rotation by an angle ![[varphi]](/logos/entities/phiv_rmgif.gif) . The vector ![[bold xi]](/logos/entities/xi_bdgif.gif) makes an angle ![[theta]](/logos/entities/thetas_rmgif.gif) with the negative ![[xi]](/logos/entities/xi_rmgif.gif) 3 axis. ![[article HTML]](../../../../../graphics/viewarticleborder.gif)
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![[Figure 5]](os0097fig5.jpg)
© International Union of Crystallography 2003
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Figure 5
The coordinate system ( ) is obtained from the coordinate system () through a counterclockwise rotation by an angle . The vector makes an angle with the negative 3 axis.
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