Hi Francois,
As for point 2 in your list: There are crystallographers (those who deal with
quasi-crystals, such as the recent Nobel laurate Dan Shechtman) who live, so to
speak, outside the box that you're referring to. There is no periodicity in
their quasi-crystals and even the unit cell is hard to define if at all.
Cheers,
Boaz
Boaz Shaanan, Ph.D.
Dept. of Life Sciences
Ben-Gurion University of the Negev
Beer-Sheva 84105
Israel
E-mail: bshaa...@bgu.ac.il
Phone: 972-8-647-2220 Skype: boaz.shaanan
Fax: 972-8-647-2992 or 972-8-646-1710
________________________________________
From: CCP4 bulletin board [CCP4BB@JISCMAIL.AC.UK] on behalf of Francois
Berenger [beren...@riken.jp]
Sent: Thursday, October 13, 2011 4:36 AM
To: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] change of origin for reflections or map
Hello,
The more I read this mailing list, the more I feel
the crystallographer is a very special human being:
- he lives in the Fourier space
- when he goes to the Cartesian space, he restricts
himself to a small box that is replicated to the infinity
using symmetry operators and origin shifts
That being said, some live in a world made of zero and ones...
Regards,
F.
