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  2. Trough - Wikipedia

    en.wikipedia.org/wiki/Trough

    Trough (geology), a long depression less steep than a trench; Trough (meteorology), an elongated region of low atmospheric pressure; Trough (physics), the lowest point on a wave; Trough level (medicine), the lowest concentration of a medicine is present in the body over time; Langmuir-Blodgett trough, a laboratory instrument

  3. Trough (meteorology) - Wikipedia

    en.wikipedia.org/wiki/Trough_(meteorology)

    A trough is an elongated region of relatively low atmospheric pressure without a closed isobaric contour that would define it as a low pressure area. Since low pressure implies a low height on a pressure surface, troughs and ridges refer to features in an identical sense as those on a topographic map .

  4. Crest and trough - Wikipedia

    en.wikipedia.org/wiki/Crest_and_trough

    A trough is the opposite of a crest, so the minimum or lowest point of the wave. When the crests and troughs of two sine waves of equal amplitude and frequency intersect or collide, while being in phase with each other, the result is called constructive interference and the magnitudes double (above and below the line).

  5. Watering trough - Wikipedia

    en.wikipedia.org/wiki/Watering_trough

    A watering trough on a stock route, Australia A Bills horse trough in Sebastian, Victoria, Australia Sheep watering trough, Idaho, 1930s. A watering trough (or artificial watering point) is a man-made or natural receptacle intended to provide drinking water to animals, livestock on farms or ranches or wild animals.

  6. Trough (geology) - Wikipedia

    en.wikipedia.org/wiki/Trough_(geology)

    In geology, a trough is a linear structural depression that extends laterally over a distance. Although it is less steep than a trench , a trough can be a narrow basin or a geologic rift . These features often form at the rim of tectonic plates .

  7. Monsoon trough - Wikipedia

    en.wikipedia.org/wiki/Monsoon_trough

    August position of the ITCZ and monsoon trough in the Pacific Ocean, depicted by area of convergent streamlines in the northern Pacific. The monsoon trough is a portion of the Intertropical Convergence Zone in the Western Pacific, [1] [2] as depicted by a line on a weather map showing the locations of minimum sea level pressure, [1] and as such, is a convergence zone between the wind patterns ...

  8. Parabolic trough - Wikipedia

    en.wikipedia.org/wiki/Parabolic_trough

    A parabolic trough collector (PTC) is a type of solar thermal collector that is straight in one dimension and curved as a parabola in the other two, lined with a polished metal mirror. The sunlight which enters the mirror parallel to its plane of symmetry is focused along the focal line , where objects are positioned that are intended to be heated.

  9. Bread trough - Wikipedia

    en.wikipedia.org/wiki/Bread_trough

    A dough trough from Aberdour Castle, Fife, Scotland. A kneading trough is a term for the vessel in which dough, after being mixed and leavened was left to swell or ferment. The first citation of kneading-trough in the Oxford English Dictionary is Chaucer, The Miller's Tale, 1386. Flour was not stored, perhaps for fear of insect infestation, but ...