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  2. Grade (slope) - Wikipedia

    en.wikipedia.org/wiki/Grade_(slope)

    l = slope length α = angle of inclination. The grade (US) or gradient (UK) (also called stepth, slope, incline, mainfall, pitch or rise) of a physical feature, landform or constructed line is either the elevation angle of that surface to the horizontal or its tangent. It is a special case of the slope, where zero indicates horizontality. A ...

  3. Grade (climbing) - Wikipedia

    en.wikipedia.org/wiki/Grade_(climbing)

    The main aid climbing systems are the A-grade (usually the "new wave" version) and the C-grade systems. [2] [22] [4] While aid climbing is less popular as a standalone pursuit, aid techniques remain important in big wall climbing and alpine climbing, where the level of difficulties can vary significantly on long routes, and thus the use of aid ...

  4. Glossary of climbing terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_climbing_terms

    A A-grade Also aid climbing grade. The technical difficulty grading system for aid climbing (both for "original" and an adapted version for "new wave"), which goes: A0, A1, A2, A3, A4, A5 and up to A6 (for "new wave"). See C-grade. Abalakov thread Abalakov thread Also V-thread. A type of anchor used in abseiling especially in winter and in ice climbing. ABD Also assisted braking device. A term ...

  5. Slope - Wikipedia

    en.wikipedia.org/wiki/Slope

    Slope illustrated for y = (3/2)x − 1.Click on to enlarge Slope of a line in coordinates system, from f(x) = −12x + 2 to f(x) = 12x + 2. The slope of a line in the plane containing the x and y axes is generally represented by the letter m, [5] and is defined as the change in the y coordinate divided by the corresponding change in the x coordinate, between two distinct points on the line.

  6. Gradian - Wikipedia

    en.wikipedia.org/wiki/Gradian

    In trigonometry, the gradian – also known as the gon (from Ancient Greek γωνία (gōnía) 'angle'), grad, or grade [1] – is a unit of measurement of an angle, defined as one-hundredth of the right angle; in other words, 100 gradians is equal to 90 degrees. [2] [3] [4] It is equivalent to ⁠ 1 / 400 ⁠ of a turn, [5] ⁠ 9 / 10 ⁠ of ...

  7. Stream gradient - Wikipedia

    en.wikipedia.org/wiki/Stream_gradient

    Stream gradient (or stream slope) is the grade (or slope) of a stream.It is measured by the ratio of drop in elevation and horizontal distance. [1] It is a dimensionless quantity, usually expressed in units of meters per kilometer (m/km) or feet per mile (ft/mi); it may also be expressed in percent (%).

  8. Drainage gradient - Wikipedia

    en.wikipedia.org/wiki/Drainage_gradient

    Due to the normal cross slope and the interaction with grade, road sections with insufficient drainage gradient are few and short. Still, they account for an unacceptable number of skid accidents. These hot spots are found at the entrances and exits of banked curves, where the cross slope changes direction in order to create superelevation.

  9. List of grade milestones in rock climbing - Wikipedia

    en.wikipedia.org/wiki/List_of_grade_milestones...

    Nordverschneidung (800-meters, 20-pitches) – Lalidererspitze Karwendel (AUT) – 1947 – Big wall free climb at UIAA Grade VII by Mathias Rebitsch and Franz Lorenz. [228] 6a+ (5.10b): Via Vinatzer (180-meters, 6-pitches) – Stevia, Val Gardena, Dolomites, (ITA) – 1933 – Multi-pitch at UIAA Grade VII- by Giovanni Vinatzer and Vincenzo ...