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Adding local short description: "Mathematically-calculated curve in which a straight section changes into a curve", overriding Wikidata description "increasing degree of curvature" (Shortdesc helper) |
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The equivalence of the railroad transition spiral and the [[clothoid]] seems to have been first published in 1922 by Arthur Lovat Higgins.<ref name="higgins"/> Since then, "clothoid" is the most common name given the curve, but the correct name (following standards of academic attribution) is 'the [[Euler spiral]]'.<ref>{{Cite journal |last=Archibald |first=Raymond Clare |author-link=Raymond Clare Archibald |date=June 1917 |title=Euler Integrals and Euler's Spiral--Sometimes called Fresnel Integrals and the Clothoide or Cornu's Spiral |url=http://www.glassblower.info/Euler-Spiral/AMM/AMM-1918.HTML |journal=American Mathematical Monthly |volume=25 |issue=6 |pages=276–282 |via=Glassblower.Info}}</ref>
==Geometry==
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