TERMIUM Plus®

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

lame de mica-quart d'onde [1 record]

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Record 1 2012-01-16

English

Subject field(s)
  • Optical Instruments
  • Optics
  • Geological Research and Exploration
DEF

A thin sheet of mica ... of such thickness as to introduce a phase difference of one-quarter cycle between the ordinary and the extraordinary components of light passing through.

OBS

Such a plate converts circularly polarized light into plane-polarized light.

French

Domaine(s)
  • Instruments d'optique
  • Optique
  • Recherches et prospections géologiques
OBS

Interposée sur le trajet des rayons lumineux, cette lame fait subir aux vibrations lumineuses un retard égal au quart de la longueur d'onde de la région moyenne du spectre (c'est-à-dire à la moitié du retard qui correspond au blanc du 1er ordre) : entre nicols croisés, cette lame, examinée seule, donne une teinte gris moyen.

Spanish

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TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
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