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MICROSCOPIO ELECTRONICO BARRIDO [1 record]
Record 1 - internal organization data 2014-01-29
Record 1, English
Record 1, Subject field(s)
- Scientific Instruments
- Photoelectricity and Electron Optics
Record 1, Main entry term, English
- scanning electron microscope
1, record 1, English, scanning%20electron%20microscope
correct
Record 1, Abbreviations, English
- SEM 2, record 1, English, SEM
correct
Record 1, Synonyms, English
- scanning electronic microscope 3, record 1, English, scanning%20electronic%20microscope
correct
- SEM 4, record 1, English, SEM
correct
- SEM 4, record 1, English, SEM
- scanning EM 5, record 1, English, scanning%20EM
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
An instrument similar to an electron microscope in that a beam of electrons is used to scan the surface of a specimen. 6, record 1, English, - scanning%20electron%20microscope
Record number: 1, Textual support number: 1 OBS
The beam is moved in a point-to-point manner over the surface of the specimen. These electrons are deflected, collected, accelerated, and directed against a scintillator. The large number of photons thus created are converted into an electric signal that, in turn, modulates the beam scanning the surface of the specimen. The image produced appears to be three-dimensional and lifelike. 6, record 1, English, - scanning%20electron%20microscope
Record 1, French
Record 1, Domaine(s)
- Instruments scientifiques
- Photo-électricité et optique électronique
Record 1, Main entry term, French
- microscope électronique à balayage
1, record 1, French, microscope%20%C3%A9lectronique%20%C3%A0%20balayage
correct, masculine noun
Record 1, Abbreviations, French
- MEB 2, record 1, French, MEB
correct, masculine noun
Record 1, Synonyms, French
- microscope à balayage électronique 3, record 1, French, microscope%20%C3%A0%20balayage%20%C3%A9lectronique
correct, masculine noun
- MBE 4, record 1, French, MBE
correct, masculine noun
- MBE 4, record 1, French, MBE
- microscope électronique à balayage de surface 5, record 1, French, microscope%20%C3%A9lectronique%20%C3%A0%20balayage%20de%20surface
correct, masculine noun
- microscope à balayage 6, record 1, French, microscope%20%C3%A0%20balayage
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Microscope électronique à balayage (MEB) [...] Un faisceau d'électrons mitraille l'échantillon. Au contact de la surface, le faisceau perd de l'énergie, et émet des électrons secondaires, des rayons X, de la lumière. Or l'intensité de ces électrons secondaires dépend de la nature du point bombardé et du relief, ce qui permet, après analyse, de construire une image. On voit ainsi la surface des bactéries, pollens, cristaux... 7, record 1, French, - microscope%20%C3%A9lectronique%20%C3%A0%20balayage
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Instrumentos científicos
- Fotoelectricidad y óptica electrónica
Record 1, Main entry term, Spanish
- microscopio electrónico de barrido
1, record 1, Spanish, microscopio%20electr%C3%B3nico%20de%20barrido
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 CONT
Los microscopios electrónicos de barrido se fundan en el mismo principio de la visión natural y proporcionan imágenes extraordinariamente detalladas de objetos opacos. [...] Un haz primario de electrones caracterizado por su fineza barre la superficie del objeto [...] punto por punto y línea por línea. Así herido por el haz, cada uno de los puntos emite electrones secundarios que, debidamente colectados, forman una señal que modula el haz catódico de un catoscopio de televisión. Este haz barre la pantalla luminiscente en sincronismo con el haz primario y forma en ella la imagen del objeto considerablemente ampliado. 2, record 1, Spanish, - microscopio%20electr%C3%B3nico%20de%20barrido
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