- #1
DollarBill
- 44
- 0
Considering only the 4 lower-right atoms (one unit cell), I'm somewhat confused as to why the coordinates for the center atom (b) is (1/3, 2/3, 1/2) with respect to (a1, a2, c).
c is pretty self explanatory, but I don't quite get the other 2. I think one of my main confusions is where the origin is being taken when considering just one unit cell.
[PLAIN]http://img856.imageshack.us/img856/2272/hexagonalclosepackedstr.gif
Thanks
c is pretty self explanatory, but I don't quite get the other 2. I think one of my main confusions is where the origin is being taken when considering just one unit cell.
[PLAIN]http://img856.imageshack.us/img856/2272/hexagonalclosepackedstr.gif
Thanks
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