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Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2023-03-14

English

Subject field(s)
  • Physics
  • Electronics
DEF

... the emission of electrons from the surface of a conductor under the influence of a strong electric field as a result of the tunnel effect.

CONT

Electric field electron emission is the process by which free electrons are emitted from the metal surface when strong electric field is applied. Electric field electron emission is also called as electron field emission, field electron emission and field emission. Electric field electron emission occurs not only in metals, but also in liquids. Field electron emission occurs in metals that are placed at very strong electric field. In other words, field electron emission occurs when large amount of energy in the form of electric field is applied to the free electrons in the metals.

French

Domaine(s)
  • Physique
  • Électronique
CONT

Émission par effet de champ électrique [...] L'émission électronique résulte dans ce cas de l'application d'un champ électrique de grande valeur à la surface du corps émetteur. Dans ce champ, les électrons sont soumis à des forces très intenses et certains d'entre eux, qui ne sont pas attirés par le noyau de l'atome avec une force suffisante, sont arrachés.

Spanish

Campo(s) temático(s)
  • Física
  • Electrónica
DEF

Emisión de electrones, desde un metal o semiconductor a un vacío, bajo la influencia de un campo eléctrico potente.

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Record 2 2021-02-04

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Physics
  • Analytical Chemistry
CONT

Infrared emission spectroscopy is characteristic in that the emission is isotropic and is hardly influenced by the surface profile of the base material. Therefore, as long as a base, free of the organic matter to be analyzed, is available, it is possible to obtain an infrared emission spectrum from the contrast between the sample and the base material.

OBS

spectrum: The plural forms are "spectra" and "spectrums."

Key term(s)
  • infra-red emission spectrum
  • infrared emission spectrums
  • infra-red emission spectrums
  • infrared emission spectra
  • infra-red emission spectra

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Physique
  • Chimie analytique

Spanish

Campo(s) temático(s)
  • Medición y análisis (Ciencias)
  • Física
  • Química analítica
CONT

Con un espectro de emisión de infrarrojos entre 3 y 12 micrones, los paneles catalíticos son ideales para la fusión, gelificación, polimerización y cocción de pinturas en polvo.

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Record 3 2004-02-03

English

Subject field(s)
  • Computer Display Technology
  • Spacecraft
CONT

Contrary to standard e-beams, this beam is free from spacecraft charging and plasma interaction problems; also, its energy flux is weak but varies across the cross section, which is large, making possible continuous observation from the spacecraft with high resolution of induced emissions. Line of sight sweeps would provide a brightness scan of line-integrated emission.

French

Domaine(s)
  • Techniques d'affichage (Ordinateurs)
  • Engins spatiaux

Spanish

Save record 3

Record 4 2003-09-05

English

Subject field(s)
  • Meteorology
  • Physics
DEF

Emission of water vapour by the free surface of liquid water at a temperature below its boiling point.

Key term(s)
  • water evaporation

French

Domaine(s)
  • Météorologie
  • Physique
DEF

Émission de vapeur d'eau par une surface libre d'eau liquide à une température inférieure à son point d'ébullition.

Spanish

Campo(s) temático(s)
  • Meteorología
  • Física
DEF

Emisión de vapor de agua por una superficie libre a temperatura inferior a su punto de ebullición.

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Record 5 2003-01-22

English

Subject field(s)
  • Plasma Physics
DEF

The radiation emitted by a plasma after the power which maintains it is cut off. When the plasma has become sufficiently cool, the free electrons recombine with the ions, resulting in the emission of recombination radiation. [Definition standardized by ISO. ]

OBS

Sometimes used to denote the momentary persistence of a plasma after interruption of the discharge.

OBS

afterglow: term standardized by ISO.

Key term(s)
  • after discharge

French

Domaine(s)
  • Physique des plasmas
DEF

Rayonnement émis par un plasma après interruption de son alimentation énergétique. Lorsque le plasma est devenu suffisamment froid, les électrons libres se recombinent avec les ions, ce qui provoque l'émission du rayonnement de recombinaison. [Définition normalisée par l'ISO.]

OBS

postluminescence : terme utilisé pour désigner la persistance momentanée d'un plasma après interruption de la décharge.

OBS

postluminescence : terme normalisé par l'ISO.

Key term(s)
  • post-décharge

Spanish

Save record 5

Record 6 1995-03-01

English

Subject field(s)
  • Energy (Physics)
DEF

Energy(or work) required to withdraw an electron completely from a metal surface. This energy is a mesure of how tightly a particular metal holds its electrons--that is, of how much lower the electron's energy is when present within the metal than when completely free. The work function is important in applications involving electron emission from metals, as in photocells(electric eyes) and vacuum tubes.

Key term(s)
  • energy function

French

Domaine(s)
  • Énergie (Physique)
DEF

Énergie minimale nécessaire pour faire passer un électron d'un niveau de Fermi à l'infini, exprimé en eV [électron-volt] (électronique théorique).

Key term(s)
  • énergie d'extraction

Spanish

Save record 6

Record 7 1994-05-30

English

Subject field(s)
  • Environmental Economics
CONT

In emission trading, emitters acquire emission allowances as private assets that can be sold for money. If the allowances are granted free rather than auctioned, emission trading could indeed create windfall profits by converting public resources into transferable private assets.

French

Domaine(s)
  • Économie environnementale
CONT

Si les contingents sont distribués sans frais plutôt que d'être vendus aux enchères, l'échange de droits d'émissions pourrait certes constituer une véritable aubaine.

Spanish

Save record 7

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