principal radii

principal radii

[′prin·sə·pəl ′rād·ē‚ī]
(mathematics)
The radii of curvature of the normal sections with maximum and minimum curvature at a given point on a surface; the reciprocals of the principal curvatures.
References in periodicals archive ?
iy] are principal radii of the curvature of body 1 in xz plane and yz plane, respectively.
1x]: Principal radii of curvature of body 1 in xz plane
2] the principal radii of curvature of the LV interface (1/m) S entropy (J/K) s arc-length of the vertical section of the LV interface (m) T temperature (K) U internal energy (J) [v.

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