Search results
Results From The WOW.Com Content Network
X-ray diffraction is a generic term for phenomena associated with changes in the direction of X-ray beams due to interactions with the electrons around atoms. It occurs due to elastic scattering, when there is no change in the energy of the waves. The resulting map of the directions of the X-rays far from the sample is called a diffraction pattern.
Fritz London. Max Theodor Felix von Laue (German: [maks fɔn ˈlaʊ̯ə] ⓘ; 9 October 1879 – 24 April 1960) was a German physicist who received the Nobel Prize in Physics in 1914 for his discovery of the diffraction of X-rays by crystals.
t. e. Photo 51 is an X-ray based fiber diffraction image of a paracrystalline gel composed of DNA fiber [1] taken by Raymond Gosling, [2][3] a postgraduate student working under the supervision of Maurice Wilkins and Rosalind Franklin at King's College London, while working in Sir John Randall 's group. [4][5][6][7][8] The image was tagged ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 19 September 2024. British X-ray crystallographer (1920–1958) This article is about the chemist. For the Mars rover named after her, see Rosalind Franklin (rover). Rosalind Franklin Born Rosalind Elsie Franklin (1920-07-25) 25 July 1920 Notting Hill, London, England Died 16 April 1958 (1958-04-16 ...
Dorothy Mary Crowfoot Hodgkin OM FRS HonFRSC [9][10] (née Crowfoot; 12 May 1910 – 29 July 1994) was a Nobel Prize -winning English chemist who advanced the technique of X-ray crystallography to determine the structure of biomolecules, which became essential for structural biology. [9][11]
A powder X-ray diffractometer in motion. X-ray crystallography is the experimental science of determining the atomic and molecular structure of a crystal, in which the crystalline structure causes a beam of incident X-rays to diffract in specific directions. By measuring the angles and intensities of the X-ray diffraction, a crystallographer ...
Bragg's law. In many areas of science, Bragg's law, Wulff –Bragg's condition, or Laue–Bragg interference are a special case of Laue diffraction, giving the angles for coherent scattering of waves from a large crystal lattice. It describes how the superposition of wave fronts scattered by lattice planes leads to a strict relation between the ...
Rietveld refinement is a technique described by Hugo Rietveld for use in the characterisation of crystalline materials. The neutron and X-ray diffraction of powder samples results in a pattern characterised by reflections (peaks in intensity) at certain positions. The height, width and position of these reflections can be used to determine many ...