reverse curve


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reverse curve

[ri′vərs ′kərv]
(mathematics)
An S-shaped curve, that is, one having two arcs with their centers on opposite sides of the curve. Also known as S curve.
References in periodicals archive ?
The intermediate curve is positioned between the reverse curve and the peripheral curve and is often referred to as the alignment curve or landing zone.
Based on the reverse curve it was determined that the assay was linear from 4 to 1000 fmol of the analyte, with an [R.sup.2] = 0.999 [y = 0.872 ([+ or -]0.001)x - 0.974 ([+ or -]0.200)].
The reverse curve blade is 3 7/8" long and 5/32" thick, made of s35v steel.
The devices include centerlines; edge lines; horizontal alignment signs as advance warnings (including turn, curve, reverse turn, reverse curve, winding road, hairpin curve, or 270-degree loop), and advisory speed plaques supplementing the horizontal alignment signs.
At a bend in the Mississippi River, south of Cape Girardeau, Missouri, and north of Cairo, Illinois, the river flows in a broad, sweeping, reverse curve. This large, meandering loop has created an agriculturally rich, 10,000-acre, peninsula-like land mass known as Dry Bayou-Thompson Bend, located just above the Mississippi River's confluence with the Ohio River.
Crown molding has a reverse curve (called an "ogee") inspired by ancient Greek architecture.