. Electron microscopy; proceedings of the Stockholm Conference, September, 1956 . Fig. 2. Dark-field micrograph of part of a sample of mine dust showing the distribution of sodium chloride. scopy is used. The system is illustrated in figure 1. O is the object from which a number of co-axial cones of electrons (Bragg reflections) emerge. A diaphragm (A) with a narrow annular aperture, such as that shown at the right, is introduced between the object and the objective lens. By varying the distance of the diaphragm from the object any one of the cones of electrons can be made to pass through the
GLIX-115-MA7A0K
Magyarország
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GLIX Prime
Novel Use
Fotós / Szerző
The Bookworm Collection
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. Electron microscopy; proceedings of the Stockholm Conference, September, 1956 . Fig. 2. Dark-field micrograph of part of a sample of mine dust showing the distribution of sodium chloride. scopy is used. The system is illustrated in figure 1. O is the object from which a number of co-axial cones of electrons (Bragg reflections) emerge. A diaphragm (A) with a narrow annular aperture, such as that shown at the right, is introduced between the object and the objective lens. By varying the distance of the diaphragm from the object any one of the cones of electrons can be made to pass through the