TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

INTERFERENCE FILTER [4 records]

Record 1 1999-04-26

English

Subject field(s)
  • Analytical Chemistry
CONT

With an interference filter, one pair of photocells is used to monitor at 154 nm, and a second pair of photocells with another filter is used to monitor at 280 nm. Both sets of photocells are continuously monitoring both the sample and the reference side of the flow cell, allowing for real-time monitoring at both wavelengths.

French

Domaine(s)
  • Chimie analytique

Spanish

Save record 1

Record 2 1999-02-23

English

Subject field(s)
  • Photography
  • Optics
  • Cinematography
DEF

Glass sheet carrying a number of very thin transparent dielectric or metal and dielectric layers of differing refractive index deposited on the surface by evaporation in a vacuum. Light entering these layers is reflected from the front and rear surface and for certain wavelengths the two beams enhance while others cancel one another owing to their difference in path length.

French

Domaine(s)
  • Photographie
  • Optique
  • Cinématographie
DEF

Filtre de lumière dont la sélectivité ne repose pas sur l'absorption des radiations, mais sur une réflexion sélective produite par interférence.

Spanish

Save record 2

Record 3 1992-03-10

English

Subject field(s)
  • Telecommunications
  • Lasers and Masers
  • Electronic Devices
DEF

A device added between a source of human-made interference and a radio receiver to attenuate or eliminate noise signals. It generally contains a combination of capacitance and inductance.

French

Domaine(s)
  • Télécommunications
  • Masers et lasers
  • Dispositifs électroniques
CONT

Pour réduire le rayonnement parasite aux valeurs imposées, on dispose des filtres (...) dans les circuits reliés aux appareils perturbateurs ou entre certains points de ces derniers et la terre ou la masse (...) Les filtres antiparasites sont constitués par un assemblage convenable de condensateurs, d'inductances et de résistances.

Spanish

Save record 3

Record 4 1978-05-04

English

Subject field(s)
  • Astronomy
  • Scientific Measurements and Analyses
  • Geological Research and Exploration
OBS

A filter used to shut out all light except the desired wavelengths.

French

Domaine(s)
  • Astronomie
  • Mesures et analyse (Sciences)
  • Recherches et prospections géologiques
OBS

La méthode de Struve et Elvey pour détecter les émissions galactiques est extrêmement sensible, mais aussi fort laborieuse, puisque l'examen de chaque région céleste exige une pose de plusieurs heures. L'invention des "filtres interférentiels", qui permettent d'isoler, sans appareil dispersif, des régions spectrales étroites, a conduit à mettre au point des méthodes plus expéditives, bien que de sensibilité comparable.

Spanish

Save record 4

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