TERMIUM Plus®

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

EPAISSEUR OPTIQUE [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2016-11-23

English

Subject field(s)
  • Visual Disorders
  • Optical Glass
DEF

Thickness of the lens at its optical centre.

OBS

optical centre thickness: term and definition standardized by ISO.

French

Domaine(s)
  • Troubles de la vision
  • Verres d'optique
DEF

Épaisseur de la lentille de contact en son centre optique.

OBS

épaisseur au centre optique : terme et définition normalisés par l'ISO.

Spanish

Save record 1

Record 2 2008-05-23

English

Subject field(s)
  • Optics
  • Range Measurements (Telecommunications)
DEF

A measure of how opaque a medium or the atmosphere is to radiation passing through it.

CONT

The opacity of the Martian atmosphere is still not clear (no pun intended): The analysis of frequent HST [Hubble Space Telescope] observations of Mars' clouds and dustiness still yields values significantly below those reported by the Pathfinder IMP [interplanetary monitoring platform] camera team. E.g. on July 9th the optical depth from dust in the Pathfinder area was found by Hubble to be about 0.2, with hardly any noticeable clouds.

French

Domaine(s)
  • Optique
  • Mesures à distance (Télécommunications)
DEF

Somme des coéfficients d'atténuation de l'atmosphère intégrant les principales interactions du rayonnement de l'atmosphère : diffusions de Rayleigh et de Mie, absorption.

CONT

La mission CLOUDSAT de la NASA fournira les renseignements essentiels à l'amélioration des modèles climatiques et des modèles numériques de prévision météorologique. On obtiendra ainsi de nouvelles informations sur la répartition verticale des systèmes de nuages, y compris les profils du contenu en glace/eau et l'épaisseur optique des nuages, ce qui apportera de nouvelles précisions sur le réchauffement radiatif de l'atmosphère attribuable aux nuages.

Spanish

Campo(s) temático(s)
  • Óptica
  • Medidas de distancia (Telecomunicaciones)
Save record 2

Record 3 2002-05-23

English

Subject field(s)
  • Atmospheric Physics
DEF

In calculations of the radiative transfer, the mass of a particular absorbing or emitting material in a vertical column of unit cross-sectional area extending between two specific levels.

French

Domaine(s)
  • Physique de l'atmosphère
DEF

Dans les calculs de transfert radiatif, masse d'un matériau absorbant ou émettant donné contenu dans une colonne verticale de section unité comprise entre deux niveaux déterminés.

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
DEF

En cálculos relacionados con la transferencia por radiación, la masa de una determinada sustancia absorbente o emisora contenida en una columna de sección transversal unitaria y situada entre dos niveles dados.

Save record 3

Copyright notice for the TERMIUM Plus® data bank

© Public Services and Procurement Canada, 2025
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau

Display options

Change the order of display of the official languages of Canada
Option to display the non-official languages (Spanish or Portuguese)
Display definitions, contexts, etc., on records

Features

Language Portal of Canada

Access a collection of Canadian resources on all aspects of English and French, including quizzes.

Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.

Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.

Date Modified: