Newton Diffraction

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News: 'Diffraction since Newton' 2008
Newton’s view of diffraction is described. Diffraction is differentiated in light- and shadow-side diffraction and supplemented with references to addional experiments.
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Newton felt there were some properties a wave theory of light simply could not explain, such as diffraction. For example, diffraction is the property of waves that allow them to bend around objects and spread through openings. Single-crystal neutron diffraction measures the elastic Bragg reflection intensities from crystals of a material, the structure of which is the subject of investigation. The short-range structure of 20BaO–80TeO₂ glass was studied in situ by high pressure neutron diffraction and high pressure Raman spectroscopy. Neutron diffraction measurements were performed at the PEARL instrument of the ISIS spallation neutron.

The Neutron Powder Diffractometer is a versatile instrument, able to examine a variety of materials. With low angular coverage and a clean background, HB-2A is particularly well-suited to studying new, complex, magnetically ordered systems. CONCEPT Diffraction is the bending of waves around obstacles, or the spreading of waves by passing them through an aperture, or opening. Any type of energy that travels in a wave is capable of.

topical publications
links or extracts from topical publications, in particular further experiments and physical contributions.


Newton's diffraction experiments and their continuation
Newton reported completely about the diffraction, also where he could not explain the measuring results or explain mathematically. If today one checks the diffraction experiments of Fresnel,thus one finds out that his information very exactly is right. But exactly where his theory does not fulfil the measuring results any more enough, exactly there he breaks off the communication of his measuring results without pointing to the divergences.
Fresnel worked on, above all, the external diffraction stripes of the hindrances which correspond to the diffraction in the half-plane. There the shadow borders can be determined slightly geometrically, because from there the diffraction stripes are measured out. In a limited area he could formulate the diffraction figure of the half-plane and the external diffraction stripes of the slit in very big distances with the help of the Fourier's theorem (Fresnel integrals) mathematically, whatis a permanent merit for him .
In textbooks borderline cases are taken into consideration since 1850 only Fresnels. Newton's diffration experiments are suppressed - this must be corrected immediately.

historical and philosophical conclusions
Historical conclusions are analyzed which have originated from the nonobservance of the Newtonian diffraction experiments. Further the philosophical arguments which are based on the same cause are analyzed.
Heisenberg concluded for the structure of the photon the formal beginning: lying side by side Fermion and Antifermion with Spin and Antispin. He looked at the photon with structure and the Spin not as formal spin-quantum-number, but as a spin- rotation- or clearly as a vortex-aggregate .

Neutron Diffraction Technique Pdf

other publications
publications about the vortex structure of the light

continuing experiments
continuing experiments and their consequences on the structure of the light

intended publications
in preparation located experiments and publications

archive
archived contributions from publications, extracts and links

Topics in Current Physics

Editors: Dachs, H. (Ed.)

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Neutron Diffraction Wikipedia

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About this book

Since the great discovery made by Laue, x-ray diffraction has become the most im­ portant method for the investigation of atomic structure in condensed matter. Cer­ tain investigations, however, are difficult or totally impossible to conduct using x-rays, for example, the localization of atomic nuclei or atoms having only a few core electrons, and the observation of magnetic moments. The investigation of these important areas is made possible by neutron diffraction. Thus this method has devel­ oped into an important supplement to x-ray investigations. An ever-increasing de­ mand is put on the method by research areas, old and new. Neutron diffraction has completely reformed the subject of solid-state magnetism; especially the area of chemical binding has received a new impetus by the union of x-ray and neutron dif­ fraction. An exchange of different isotopes of the same element gives rise, as a rule, to a change in the strength of the neutron diffraction. Due to this effect itls possible, by means of deuteration, to make visible a single chain in a solid high polymer. Thus neutron small-angle scattering is important in protein research and for the biology of macromolecules. Of equal importance is the application of neu:ron diffraction in metallurgy. There already exist several excellent books which discuss the results obtained by neans of neutron diffraction.

Buy this book

Softcover 103,99 €
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Bibliographic Information

Bibliographic Information
Newton
Book Title
Neutron Diffraction
Editors
  • H. Dachs
Series Title
Topics in Current Physics
Series Volume
6
Copyright
1978

Neutron Diffraction

Publisher

Neutron Diffraction Elements

Springer-Verlag Berlin Heidelberg

Neutron Diffraction Pdf

Copyright Holder
Springer-Verlag Berlin Heidelberg
Softcover ISBN
978-3-642-81238-5
Series ISSN
0342-6793
Edition Number
1

Neutron Diffraction Sample Size

Number of Pages
XIV, 360
Topics