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  2. Trough (geology) - Wikipedia

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

    Satellite image of the Cayman Trough Bathymetric features of the Rockall Trough northwest of Scotland and Ireland. 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 ...

  3. Langmuir–Blodgett trough - Wikipedia

    en.wikipedia.org/wiki/Langmuir–Blodgett_trough

    A Langmuir–Blodgett trough (LB trough) is an item of laboratory apparatus that is used to compress monolayers of molecules on the surface of a given subphase (usually water) and to measure surface phenomena due to this compression. It can also be used to deposit single or multiple monolayers on a solid substrate.

  4. Oceanic trench - Wikipedia

    en.wikipedia.org/wiki/Oceanic_trench

    Some troughs look similar to oceanic trenches but possess other tectonic structures. One example is the Lesser Antilles Trough, which is the forearc basin of the Lesser Antilles subduction zone. [8] Also not a trench is the New Caledonia trough, which is an extensional sedimentary basin related to the Tonga-Kermadec subduction zone. [9]

  5. 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).

  6. Shortwave (meteorology) - Wikipedia

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

    Shortwave troughs are a cause of lift, or forcing, which is required for the development of thunderstorms and convection.Convection is very prevalent around shortwave troughs because not only do they provide forcing, but they are also associated with systems that provide other ingredients for the formation of thunderstorms, such as instability, wind shear, and helicity.

  7. Pneumatic trough - Wikipedia

    en.wikipedia.org/wiki/Pneumatic_trough

    Four items are required for gas collection with a pneumatic trough: [2] The trough itself, which is a large glass dish or a similar container. A gas bottle (or bulb), to hold the gas collected. A way to support the gas bottle or bulb, such as a beehive shelf or a hanger (as with Stephen Hales' design). A liquid in the trough.

  8. Experiments and Observations on Different Kinds of Air

    en.wikipedia.org/wiki/Experiments_and...

    Pneumatic trough, glass collecting cylinders and other equipment used by Priestley in his experiments on gases. The right-hand cylinder exhibits a sprig of mint which showed that plants generated oxygen from carbon dioxide Dedication to Lord Shelburne in volume I of Experiments and Observations on Different Kinds of Air (1774)

  9. 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 ...

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