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The visual field index (VFI) reflects retinal ganglion cell loss and function, as a percentage, with central points weighted more. [21] It is expressed as a percentage of visual function; with 100% being a perfect age-adjusted visual field and 0% represents a perimetrically blind field.
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 ...
The Unified Soil Classification System (USCS) is a soil classification system used in engineering and geology to describe the texture and grain size of a soil.The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol.
The gradient can also be used to measure how a scalar field changes in other directions, rather than just the direction of greatest change, by taking a dot product. Suppose that the steepest slope on a hill is 40%. A road going directly uphill has slope 40%, but a road going around the hill at an angle will have a shallower slope.
Display of roof pitches 1:12 through 18:12 A roof made of thatch, one of the oldest roofing materials, needs a steep pitch to drain properly Some types of stone roof have a very restrictive roof pitch, which can lead to leaking Working on roofs with pitches too steep for safety requires a staging of scaffolding boards secured with roof brackets A pitch gauge measuring the slope of an asphalt ...
[citation needed] A lower slope of 4% is commonly used on urban roadways where speeds are lower, and where a steeper slope would raise the outside road edge above adjacent terrain. [5] The equation for the desired radius of a curve, shown below, takes into account the factors of speed and superelevation (e).
Provincetown (/ ˈ p r ɒ v ɪ n s ˌ t aʊ n /) is a New England town located at the extreme tip of Cape Cod in Barnstable County, Massachusetts, in the United States.A small coastal resort town with a year-round population of 3,664 as of the 2020 United States census, [3] Provincetown has a summer population as high as 60,000. [4]
Charlotte (/ ˈ ʃ ɑːr l ə t / ⓘ SHAR-lət) is the most populous city in the U.S. state of North Carolina and the county seat of Mecklenburg County.The population was 874,579 at the 2020 census, [10] making Charlotte the 15th-most populous city in the United States, the seventh-most populous city in the South, and the second-most populous city in the Southeast behind Jacksonville, Florida.