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  2. Fairway (navigation) - Wikipedia

    en.wikipedia.org/wiki/Fairway_(navigation)

    The fairway width is defined as a width of the cross-section of the river that corresponds to the fairway depth, [3] the fairway height under the bridges is usually specified with respect to the highest navigable water level (HNWL).

  3. Four-dimensional space - Wikipedia

    en.wikipedia.org/wiki/Four-dimensional_space

    Four-dimensional space (4D) is the mathematical extension of the concept of three-dimensional space (3D). Three-dimensional space is the simplest possible abstraction of the observation that one needs only three numbers, called dimensions, to describe the sizes or locations of objects in the everyday world.

  4. List of tablet PC dimensions and case sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_tablet_PC...

    Tablet cases sizes Tablet PC Height Width Depth Screen Case size Acer Iconia Tab A500 [1]: 10.2 in (260 mm) 7 in (180 mm) 0.52 in (13 mm) 10.1 in (260 mm)

  5. File:Crater-depth-diagram.svg - Wikipedia

    en.wikipedia.org/wiki/File:Crater-depth-diagram.svg

    English: How crater-depth is measured, using the side-view of a typical crater. Depth "A" measures from the surface to the bottom of the crater. Depth "B" measures from the mean height of the rim to the bottom of the crater.

  6. Axonometric projection - Wikipedia

    en.wikipedia.org/wiki/Axonometric_projection

    Isometry means "equal measures" because the same scale is used for height, width, and depth". [ 9 ] From the middle of the 19th century, according to Jan Krikke (2006) [ 9 ] isometry became an "invaluable tool for engineers, and soon thereafter axonometry and isometry were incorporated in the curriculum of architectural training courses in ...

  7. Three-dimensional space - Wikipedia

    en.wikipedia.org/wiki/Three-dimensional_space

    A representation of a three-dimensional Cartesian coordinate system. In geometry, a three-dimensional space (3D space, 3-space or, rarely, tri-dimensional space) is a mathematical space in which three values (coordinates) are required to determine the position of a point.

  8. Crater depth - Wikipedia

    en.wikipedia.org/wiki/Crater_depth

    The depth of an impact crater in a solid planet or moon may be measured from the local surface to the bottom of the crater, or from the rim of the crater to the bottom. Crater depth diagram. The diagram above shows the full (side) view of a typical crater. Depth "A" measures from the surface to the bottom of the crater.

  9. Hydraulic jumps in rectangular channels - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_Jumps_in...

    The height of the hydraulic jump, similar to length, is useful to know when designing waterway structures like settling basins or spillways. The height of the hydraulic jump is simply the difference in flow depths prior to and after the hydraulic jump. The height can be determined using the Froude number and upstream energy. Equations: