The electron microscope, its development, The electron microscope, its development, present performance and future possibilities electronmicrosco00gabo Year: 1948 80 The Electron Microscope neath the stenographer's desk on which the unit is mounted, but on a separate base. The power supphes have been also very considerably sim- plified. Whereas the principle of high frequency rectification and inverse feedback regulation has been retained, the number of valves has been reduced to eleven. The accelerating potential is 30 kv in the small model against 60 kv in the large microscope, and its fluc
The electron microscope, its development, The electron microscope, its development, present performance and future possibilities electronmicrosco00gabo Year: 1948 80 The Electron Microscope neath the stenographer's desk on which the unit is mounted, but on a separate base. The power supphes have been also very considerably sim- plified. Whereas the principle of high frequency rectification and inverse feedback regulation has been retained, the number of valves has been reduced to eleven. The accelerating potential is 30 kv in the small model against 60 kv in the large microscope, and its fluctuation is about per cent against per cent or less. Specimen Chamber Viewing Screen A Complete Unit moved wherever required Supply, and Electrical Circuits in Desk Fig. 26. Type EMC Electron Microscope (Console Model) Essentially as described in connection with fig. 23 The resolution of the small experimental model is not stated by its authors, but it can be judged from figure 24 which shows a membrane spattered with heavy metal particles. The instru-
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