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Aperture vs Trough - What's the difference?

aperture | trough | Related terms |

Aperture is a related term of trough.


As nouns the difference between aperture and trough

is that aperture is an opening; an open space; a gap, cleft, or chasm; a passage perforated; a hole; as, an aperture in a wall while trough is a long, narrow container, open on top, for feeding or watering animals.

As a verb trough is

to eat in a vulgar style, as if eating from a trough.

aperture

English

Noun

(en noun)
  • An opening; an open space; a gap, cleft, or chasm; a passage perforated; a hole; as, an aperture in a wall.
  • * Gilpin
    • an aperture between the mountains
  • * Owen
    • the back aperture of the nostrils
  • (optics) Something which restricts the diameter of the light path through one plane in an optical system.
  • (astronomy, photography) 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. e.g. a telescope may have a 100 cm aperture.
  • (spaceflight, communications) The (typically) large-diameter antenna used for receiving and transmitting radio frequency energy containing the data used in communication satellites, especially in the geostationary belt. For a comsat, this is typically a large reflective dish antenna; sometimes called an array .
  • (mathematics, rare, of a right circular cone) The maximum angle between the two generatrices.
    • If the generatrix makes an angle ? to the axis, then the aperture is 2?.

    Usage notes

    The aperture of microscopes is often expressed in degrees, called also the angular aperture, which signifies the angular breadth of the pencil of light which the instrument transmits from the object or point viewed; as, a microscope of 100° aperture.

    Derived terms

    * aperture priority

    Related terms

    * aperient

    External links

    * * ----

    trough

    English

    (wikipedia trough)

    Noun

    (en noun)
  • A long, narrow container, open on top, for feeding or watering animals.
    • One of Hank's chores was to slop the pigs' trough each morning and evening.
  • Any similarly shaped container.
  • # (Australia, New Zealand) A rectangular container used for washing or rinsing clothes.
  • Ernest threw his paint brushes into a kind of trough he had fashioned from sheet metal that he kept in the sink.
  • A short, narrow canal designed to hold water until it drains or evaporates.
    • There was a small trough that the sump pump emptied into; it was filled with mosquito larvae.
  • (Canada) A gutter under the eaves of a building; an eaves trough.
    • The troughs were filled with leaves and needed clearing.
  • (agriculture, Australia, New Zealand) A channel for conveying water or other farm liquids (such as milk) from place to place by gravity; any ‘U’ or ‘V’ cross-sectioned irrigation channel.
  • A long, narrow depression between waves or ridges; the low portion of a wave cycle.
    • The buoy bobbed between the crests and troughs of the waves moving across the bay.
    The neurologist pointed to a troubling trough in the pattern of his brain-waves.
  • (meteorology) A linear atmospheric depression associated with a weather front.

    • Verb

    (en verb)
  • To eat in a vulgar style, as if eating from a trough
    • he troughed his way through 3 meat pies.

    References

    * Oxford English Dictionary Online

    See also

    * crib * ditch * trench