. The electron microscope, its development, present performance and future possibilities. Electron microscopes. h) Central beam and Fi'rab order side beams'. c) side bearns only. Fig. 54 * In practice it is best to fill the cone about two thirds with light, as this gives better contrast than the full Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gabor, Dennis, 1900-. Brooklyn, Chemical Pub. Co.

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