spherical indicatrix of the principal normal

spherical indicatrix of the principal normal

[¦sfir·ə·kəl in¦dik·ə‚triks əvthə ′prin·sə·pəl ‚nȯr·məl]
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Let the spherical indicatrix of the principal normal vector of the curve C be denoted by [C.
2] be the tangent vector of the spherical indicatrix of the principal normal vector of the curve C and let [[bar.

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