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aperture of a facsimile receiver n
telegr.	mottagarapertur
aperture of a facsimile transmitter n
telegr.	sändarapertur
aperture ['æpəʧə] adj.
commun.	apertur
commun., el.	punktstorlek
crim.law., law, int. law.	inspektionshål
med.	maskhål
nat.sc., el.	aperturarea; aperturyta; solfångaryta
English thesaurus
aperture ['æpəʧə] abbr.
abbr., oil	ap; aper
cinema	A measure of the width of the opening allowing light to enter a camera. The apparent diameter of a lens viewed from the position of the object against a diffusely illuminated background is called the "effect aperture". The ratio of focal length of a lens to its "effective aperture" for an object located at infinity is called the "relative aperture", or "f/number". Larger apertures allow more light to enter a camera, hence darker scenes can be recorded. Conversely, smaller apertures allow less light to enter, but have the advantage of creating a large depth of field. See also shutter speed.

aperture: 144 phrases in 21 subjects

Antennas and waveguides	5
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