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Roundness is the measure of how closely the shape of an object approaches that of a mathematically perfect circle. Roundness applies in two dimensions , such as the cross sectional circles along a cylindrical object such as a shaft or a cylindrical roller for a bearing .
The ripples formed by dropping a small object into still water naturally form an expanding system of concentric circles. [9] Evenly spaced circles on the targets used in target archery [10] or similar sports provide another familiar example of concentric circles.
Roundness is an important indicator of the genetic affiliation of a clastic rock. The degree of roundness points to the range and mode of transport of clastic material, and can also serve as a search criterion in mineral exploration, especially for placer deposits. Alluvial debris in major rivers tend to exhibit a high degree of roundness ...
Let R be the radius of the arc which forms part of the perimeter of the segment, θ the central angle subtending the arc in radians, c the chord length, s the arc length, h the sagitta of the segment, d the apothem of the segment, and a the area of the segment.
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Roundness is the measure of how closely the shape of an object approaches that of a circle. It may also refer to: Roundness (geology), the roundness of clastic particles;
The Body Roundness Index is similar to the Body Mass Index, but relies on more anthropometric variables. The BRI which was first proposed in 2013 , uses height, weight, waist circumference, and ...
While body mass index (BMI) has long been a go-to measure of a person's health, used by doctors and health insurers alike, a new approach is taking hold. Body roundness index, or BRI, is gaining ...