. The electron microscope, its development, present performance and future possibilities. Electron microscopes. 98 The Electron Microscope amplifier. The multiplier receives on its photo-cathode the vary- ing light intensity emitted by the fluorescent screen. The second artifice is to reduce the frequency band AF of the amplifier to 300 cycles, and take the micrograms extremely slowly, in about 8-10 minutes, so as not to lose any details of the picture. The amplifier operates on a facsimile recorder, which can be seen at the right of figure 36, and which prints a seven hundred fifty lines imag
. The electron microscope, its development, present performance and future possibilities. Electron microscopes. 98 The Electron Microscope amplifier. The multiplier receives on its photo-cathode the vary- ing light intensity emitted by the fluorescent screen. The second artifice is to reduce the frequency band AF of the amplifier to 300 cycles, and take the micrograms extremely slowly, in about 8-10 minutes, so as not to lose any details of the picture. The amplifier operates on a facsimile recorder, which can be seen at the right of figure 36, and which prints a seven hundred fifty lines image every 10 minutes. Figure 37 is a sample of a scan- ning micrograph. The resolving power is of the order of 500 A, which is sufficiently below the resolution limit of the optical metallographic microscope to promise the new instrument a wide and useful field of Fig. 37. Scanning electron microgram of the surface of slightly an- nealed brass obtained with scanning electron microscope. Magnification X 5,000. 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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