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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.
Hence Bragg's law was the only type of diffraction observable, and Duane's approach could model it. Modern electron microscopes and x-ray diffraction instruments are many orders of magnitude brighter, so many find details of electron and x-ray diffraction are now known which cannot be explained by his approach.
He discovered and was the first to make accurate observations on the diffraction of light [3] [4] (although by some accounts Leonardo da Vinci had earlier noted it [5]), and coined the word 'diffraction'.
Maurice Hugh Frederick Wilkins CBE FRS (15 December 1916 – 5 October 2004) [2] was a New Zealand-born British biophysicist and Nobel laureate whose research spanned multiple areas of physics and biophysics, contributing to the scientific understanding of phosphorescence, isotope separation, optical microscopy, and X-ray diffraction.
Portrait of William Lawrence Bragg taken when he was around 40 years old. Sir William Lawrence Bragg (31 March 1890 – 1 July 1971), known as Lawrence Bragg, was an Australian-born British physicist and X-ray crystallographer, discoverer (1912) of Bragg's law of X-ray diffraction, which is basic for the determination of crystal structure.
The first X-ray diffraction experiment was conducted in 1912 by Max von Laue, [7] while electron diffraction was first realized in 1927 in the Davisson–Germer experiment [8] and parallel work by George Paget Thomson and Alexander Reid. [9] These developed into the two main branches of crystallography, X-ray crystallography and electron ...
Panchapakesa Krishnamurti (also spelt as Krishnamoorthy / Krishnamurthy), (22 January 1903 – 14 March 1966) was a scientist and industrialist in India.He was a close associate of the Nobel laureate, Sir C.V. Raman.
Compton's first book, X-Rays and Electrons, was published in 1926. In it he showed how to calculate the densities of diffracting materials from their X-ray diffraction patterns. [22] He revised his book with the help of Samuel K. Allison to produce X-Rays in Theory and Experiment (1935). This work remained a standard reference for the next ...