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--- links [2019/02/01 16:41] – janettate
+++ links [2019/02/01 17:02] – janettate
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     * Applet that demonstrates the [[http://www.applet-magic.com/brillouin.htm|construction of the first few Brillouin zones of a 2-D square lattice]].  Also discusses the Fermi surface (requires Java).
-    * Pictures of different [[http://cst-www.nrl.navy.mil/lattice/index.html|lattice types]]; rotatable. Was a great site, but now it's gone. Maybe we can find a mirror.
+    * Pictures of different [[https://www.doitpoms.ac.uk/tlplib/crystallography3/index.php|Basic tutorial]]on unit cells, lattices, symmetry from Cambridge University.
 ===== Semiconductors =====

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