aperture background

aperture

/ˈæp.ə.tjʊə(ɹ)/ /ˈæp.ɚ.tʃɚ/

Illustration aperture - Image 1

noun

Ouverture, fente, trou

An opening, gap, or hole, usually small and narrow

Examples :

"an aperture in a wall"

Une ouverture dans un mur.

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Illustration aperture - Image 1

Illustration aperture - Image 2

noun

Ouverture

Something which restricts the diameter of the light path through one plane in an optical system.

Examples :

"The camera's aperture controlled how much light entered the lens, affecting the brightness of the photograph. "

L'ouverture de l'appareil photo contrôlait la quantité de lumière entrant dans l'objectif, affectant la luminosité de la photographie.

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Illustration aperture - Image 1

noun

Ouverture, diamètre

The diameter of the aperture (in the sense above) which restricts the width of the light path through the whole system. For a telescope, this is the diameter of the objective lens.

Examples :

"This telescope has a 100cm aperture."

Ce télescope a une ouverture de 100 cm.

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Illustration aperture - Image 1

noun

Antenne, antenne parabolique

Examples :

"The satellite dish, with its large aperture, allowed the television station to receive a strong signal from the communication satellite. "

L'antenne parabolique, avec sa grande ouverture, a permis à la station de télévision de recevoir un signal puissant du satellite de communication.

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Illustration aperture - Image 1

noun

Angle au sommet

(of a right circular cone) The maximum angle between the two generatrices.

Examples :

"If the generatrix makes an angle θ to the axis, then the aperture is 2θ."

Si la génératrice forme un angle θ avec l'axe, alors l'angle au sommet est de 2θ.

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