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:[EMAIL PROTECTED] On Behalf >> Of Diana Tomchick >> Sent: Wednesday, January 24, 2007 11:09 AM >> To: [email protected] >> 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: [EMAIL PROTECTED] >>>>> 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 [EMAIL PROTECTED] >>>> >> >> * * * * * * * * * * * * * * * * * * * * * * * * * * * * >> 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: [EMAIL PROTECTED] >> 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: [EMAIL PROTECTED] > 214-645-6383 (phone) > 214-645-6353 (fax) >
