Change the orientation of the model at any time by clicking the mouse on the display and dragging.
Hover the pointer over each control for information on what it does..
Structure Tab
Choose the Bravais lattice from the drop down list.
Enter the cell edge lengths and angles. (Only values that can be changed for the lattice chosen are selectable and some angles are preset as appropriate.)
Use the Cells spinner to select the number of cells on each side of the grid (maximum 4).
Press Show to view the lattice.
Press + or - to increase or decrease the magnification.
Press Print to print out the display. (Not available on all browsers or operating systems).
Geometry Tab
Select the (hkl) checkbox(es) to view crystal planes. Enter the Miller indices of the plane in the spinner.
Select the [uvw] checkbox(es) to view crystal directions. Enter the direction indices in the spinner.
Press Show to view these planes or directions. The d-spacing and lattice spacing for the plane and direction chosen are also shown. If more than one plane or direction is chosen, the angle between the planes and directions is also shown.
Press (001), (100) or (010) to align the view with the plane parallel to the screen.
Symmetry Tab
Enter the Miller indices of a plane, or the direction indices in the spinner.
Press Update to show a list of the symmetry related planes or directions in the drop down list. Select the plane or direction to view from the drop down list. All symmetry related directions can be viewed by selecting "Show All".
Superimpose the point group symmetry by selecting the checkbox.
The value in spinners can be changed by typing in the text box or by pressing the tiny up and down arrows.
Only see a grey box with a
red cross? You must get Java installed on your system.
References
Essentials of Crystallography D McKie and C McKie Blackwell Scientific Publications (1986)
Fundamentals of Crystallography C Giacovazzo et al Oxford University Press (1994)