On Wednesday 24 January 2007 11:12, Daniel Anderson wrote:
> An IUCr nomenclature committee once recommended eradication of the
> "B-factor". Trueblood, et al. Acta Cryst (1996) A52, 770-781.
> Whether or not the factor of 8 pi squared can be eradicated,
> the publication is worth reading because i
are referring to?
>> http://www.iucr.org/iucr-top/publ/50YearsOfXrayDiffraction/index.html
>>
>> Regards,
>> Mitch
>>
>> -Original Message-
>> From: CCP4 bulletin board [mailto:[EMAIL PROTECTED] On Behalf
>> Of Diana Tomchick
>> Sent:
: CCP4 bulletin board [mailto:[EMAIL PROTECTED] On Behalf
Of Diana Tomchick
Sent: Wednesday, January 24, 2007 11:09 AM
To: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] "B" in B-factor
An interesting discussion of the development of the Debye-Waller
correction can be found in the IUCr p
An IUCr nomenclature committee once recommended eradication of the
"B-factor". Trueblood, et al. Acta Cryst (1996) A52, 770-781.
Whether or not the factor of 8 pi squared can be eradicated,
the publication is worth reading because it discusses what is modeled
by Ueq (times 8 pi squared = B), and it
An interesting discussion of the development of the Debye-Waller
correction can be found in the IUCr publication, "Fifty Years of X-
Ray Diffraction," edited by P.P. Ewald (unfortunately, it's no longer
in print). It seems that Debye was the first scientist to tackle "a
problem which appeare
It looks like the earliest reference to the Debye-Waller factor is from
Debye's paper:
Uber den Einfluss der Warmebewegung uf die Interferenzerscheinungen beiu
Rontgenstrahlen, Verhandl. deut. phyik. Ges., 15, 678-689 (1913),
and the succeeding paper Verhandl. deut. phyik, Ges., 15, 738-752 (1913
I see that the [ccp4bb] has been restored to the mail Subject: line.
Thank you to the responsible party.
--
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome
Thanks Gerard for all those explanations, I'm particularly convinced by
the last one.
Poor of me, who believed that the "B" stood for Boltzman or something
like that, I now have the correct answer!
Cheers
Virgile
Gerard DVD Kleywegt a écrit :
May be too trivial, I was just wondering
what "
ubject: Re: [ccp4bb] "B" in B-factor
> May be too trivial, I was just wondering
> what "B" stands for in the term "B-factor".
i don't really know, but i do have some wild theories, none of which are
necessarily based in fact:
- the B-factor is also called
Tricky...
My guess would be that it comes from the commonplace use of symbols in
one common definition of a Gaussian:
y = a exp( - b x^2 )
(although that doesn't explain the capitalisation).
Rajesh Kumar Singh wrote:
May be too trivial, I was just wondering
what "B" stands for in the term "B
May be too trivial, I was just wondering
what "B" stands for in the term "B-factor".
i don't really know, but i do have some wild theories, none of which are
necessarily based in fact:
- the B-factor is also called the Debye-Waller factor. now, someone assumed
that peter debye was french (in
Hi Rajesh,
I also wondered about that.
Not having been able to find a good explanation in the literature
I thought of it as reducing factor of the *B*ragg peaks. M???
Then I stopped thinking about it (I now try to call them ADPs)
Roberto
On 24 Jan 2007, at 12:42, Rajesh Kumar Singh wrote:
yeah, atomic displacement parameter is abbreviated as ADP.
I wanted to know if there is some specific term
for "B" in B factor as "R" refers to Reliability in R-factor.
Rajesh
On Wednesday 24 January 2007 14:52, evrard wrote:
> Rajesh Kumar Singh wrote:
> > May be too trivial, I was just wonderin
Rajesh Kumar Singh wrote:
May be too trivial, I was just wondering
what "B" stands for in the term "B-factor".
Thanks
Rajesh
Hi Rajesh,
why, it's obvious, B stands for 'atomic displacement parameter'
Guillaume
--
**
Guillaume Evrard
European Molecular Biology La
May be too trivial, I was just wondering
what "B" stands for in the term "B-factor".
Thanks
Rajesh
--
Rajesh Kumar Singh
Institut fur Biochemie
Universitat Greifswald
Felix-Hausdorff-Str. 4
D-17489 Greifswald
Germany
E.Mail: [EMAIL PROTECTED]
Phone: +49-3834- 86 4392
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