It is now two years since Dr. Laue conceived the idea of employing a crystal as a space diffraction grating- for X-rays. The successful realisation of the idea by Messrs. Friedrich and Knipping has opened up a wide field, of research in which results of great interest and importance have already been obtained. On the one hand the analysis of X-rays which has been rendered possible has led to remarkable conclusions concernincr the atoms which emit them under the proper stimulus, and has thrown an entirely fresh light on problems of atomic structure. On the other hand the architecture of crystals has been laid open to examination ;crystallography is no longer obliged to build only on the external forms of crystals, but on the much firmer basis of an exact knowledoe of the arranoement of the atoms within. It seems possible also that the thermal movements of the atoms in the crystal will be susceptible not only of observation but even of exact measurement.
(Typographical errors above are due to OCR software and don't occur in the book.)
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Vendeur : Leserstrahl (Preise inkl. MwSt.), Oldenbüttel, Allemagne
Taschenbuch. Etat : Fine. leichte Lagerspuren / minor shelfwear---. nein. N° de réf. du vendeur 92873
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