page 79, chapter 5
On Wed, January 24, 2007 1:43 pm, Diana Tomchick wrote:
> Yes, it is! I somehow missed that when checking the IUCr web site.
> Virtually the whole publication is available as a series of
> downloadable PDF files, though for some strange reason the indices
> are listed but not available. Without the Name Index it would have
> taken a huge amount of time to locate the pertinent sections in a 700
> page book.
>
> Diana
>
> On Jan 24, 2007, at 1:23 PM, Miller, Mitchell D. wrote:
>
>> Hi Diana,
>> Is this the same publication you are referring to?
>> http://www.iucr.org/iucr-top/publ/50YearsOfXrayDiffraction/index.html
>>
>> Regards,
>> Mitch
>>
>> -----Original Message-----
>> From: CCP4 bulletin board [mailto:[log in to unmask]] On Behalf
>> Of Diana Tomchick
>> Sent: Wednesday, January 24, 2007 11:09 AM
>> To: [log in to unmask]
>> Subject: Re: [ccp4bb] "B" in B-factor
>>
>> 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 appeared to others hopelessly complicated at the time:
>> the influence of the temperature motion of the atoms on the
>> diffraction of X-rays (p. 79 of aforementioned publication)."
>> Interestingly, his original formulation of the correction included
>> the constant M, "which can be expressed by means of the elastic
>> properties of the crystal or their combination, the 'Debye
>> Temperature', which occurs in the theory of the specific heat (same
>> reference)." The text goes on to mention that Ivar Waller
>> demonstrated in 1923 that Debye's expression for M was wrong by a
>> factor of two. No mention is given in "Fifty Years" of a "B factor"
>> but it sounds as though Waller decided to use a different
>> nomenclature in his paper from 1927 to avoid confusion.
>>
>> Too bad that "Fifty Years" is no longer in print, though used copies
>> can be purchased from various on-line booksellers. It provides a very
>> enlightening and easily readable history of the early days in the
>> field, and the interchange of scientists and ideas across the
>> Atlantic Ocean.
>>
>> Diana
>>
>>
>> On Jan 24, 2007, at 11:14 AM, Santarsiero, Bernard D. wrote:
>>
>>> 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),
>>>
>>> and Waller:
>>>
>>> Die Einwirkung der Warmbewegung der Kristllatome auf Intersitat,
>>> Lage, and
>>> Scharfe der Rontgenspektrallinein, Ann. Physik, 83, 153-183 (1927).
>>>
>>> Interestingly, beta was used for the anisotropic Gaussian form of the
>>> isotropic Gaussian B-factor.
>>>
>>> Bernie
>>>
>>>
>>>
>>> On Wed, January 24, 2007 9:05 am, Roberto Steiner wrote:
>>>> 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. Mhhhh???
>>>>
>>>> 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:
>>>>
>>>>> 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: [log in to unmask]
>>>>> Phone: +49-3834- 86 4392
>>>>
>>>> ---
>>>> Dr. Roberto Steiner
>>>> Randall Division of Cell and Molecular Biophysics
>>>> New Hunt's House
>>>> King's College London
>>>> Guy's Campus
>>>> London, SE1 1UL
>>>> Phone +44 (0)20-7848-8216
>>>> Fax +44 (0)20-7848-6435
>>>> e-mail [log in to unmask]
>>>>
>>
>> * * * * * * * * * * * * * * * * * * * * * * * * * * * *
>> Diana R. Tomchick
>> Associate Professor
>> University of Texas Southwestern Medical Center
>> Department of Biochemistry
>> 5323 Harry Hines Blvd.
>> Rm. ND10.214B
>> Dallas, TX 75390-8816, U.S.A.
>> Email: [log in to unmask]
>> 214-645-6383 (phone)
>> 214-645-6353 (fax)
>
> * * * * * * * * * * * * * * * * * * * * * * * * * * * *
> Diana R. Tomchick
> Associate Professor
> University of Texas Southwestern Medical Center
> Department of Biochemistry
> 5323 Harry Hines Blvd.
> Rm. ND10.214B
> Dallas, TX 75390-8816, U.S.A.
> Email: [log in to unmask]
> 214-645-6383 (phone)
> 214-645-6353 (fax)
>
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