Übersetzen...
Automatische Übersetzung:
Electron microscope form the first series by Siemens, 1939. At Siemens B.v. Bories and E. Ruska developed the apparatus from 1937-1939. The microscope has three magnetic lenses, a resolution of about 3 nanometers and a magnification of about 3000. Deutches Museum. Munich. Germany.