TERMIUM Plus®

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

OPTICAL EXTENT [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-04-17

English

Subject field(s)
  • Optics
DEF

Product of etendue or throughput and the square of the refractive index.

French

Domaine(s)
  • Optique
DEF

Paramètre d'évaluation de la quantité de rayons lumineux qui composent un faisceau issu d'une source optique; le paramètre indique le rapport entre le flux énergétique du faisceau émis et sa luminance énergétique.

Spanish

Save record 1

Copyright notice for the TERMIUM Plus® data bank

© Public Services and Procurement Canada, 2024
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: