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# Problem and solution i ph o 21

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### Problem and solution i ph o 21

1. 1. Figure 1 Diffraction of a parallel X-ray beam along the z-axis. The angle between the crystal and the y-axis is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4. 4. Figure 2. The cubic latice of Potassium Chloride in which the K+ and Cl- wons have almost the same size. Figure 3. Scattering of X-rays by a powder of KCl crystals results in the production of concentric dark circles on a photographic plate. Figure 1 The spaceship Atlantis (A) with a satellite (S) in an orbit around the earth. The orbit lies in the earth’s equatorial plane. The magnetic field (B) is perpendicular to the diagram and is directed towards the reader. ,Q VRPH PHDVXUHPHQWV WKH VRFDOOHG SRZGHU PHWKRG LV HPSORHG \$ EHDP RI ;UDV LV VFDWWHUHG E D SRZGHU RI YHU PDQ VPDOO FUVWDOV 2I FRXUVH WKH VL]HV RI WKH FUVWDOV DUH PXFK ODUJHU WKDQ WKH ODWWLFH VSDFLQJ D
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