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electron microscope

1

Terminological databases

Materjalitehnika terminibaas

ID 671241 Last modified 06.06.2024
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Domain metallographylaboratory engineering
  • objektide suure suurendusega (kuni 200 000 X) uurimisel kasutatav seade, mille talitlus rajaneb elektronoptikal (vt mikroskoop)
  • tube in which electrones emitted from the cathode are focused, by suitable magnetic and electrostatic fields, to form an enlarged image of the cathode on a fluorescent screen (see: microscope)
elektronmikroskoop
electron microscope

Metroloogia terminibaas

ID 574809 Last modified 16.02.2024
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Domain metrologymeasuring instruments
elektronmikroskoop preferred
  • mikroskoop, mis kasutab valgusallikana kiirendatud elektronide kiirt
  • elektronoptiline seade, mis annab väikestest objektidest suurendatud kujutisi elektronide kimbu – elektronsondi abil
  • microscope that uses a beam of accelerated electrons as a source of illumination
elektronmikroskoop preferred
Usage examples
  • Elektronmikroskoobid kasutavad elektronoptikat, mis on analoogne optilise valgusmikroskoobi klaasläätsedega, et juhtida elektronkiirt, fokusseerides kiirt suurendatud kujutiste või elektronide difraktsioonimustrite tekitamiseks.
Good to know
  • Kuna elektroni lainepikkus võib olla kuni 100 000 korda väiksem kui nähtaval valgusel, on elektronmikroskoopide eraldusvõime umbes 0,1 nm.
electron microscope
Usage examples
  • They use electron optics that are analogous to the glass lenses of an optical light microscope to control the electron beam, for instance focusing them to produce magnified images or electron diffraction patterns.
Good to know
  • As the wavelength of an electron can be up to 100 000 times smaller than that of visible light, electron microscopes have a much higher resolution of about 0,1 nm, which compares to about 200 nm for light microscopes.

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