Quote#Wisdom
All screws of a given pitch belonging to a system of the third order…
Quote byRobert Stawell Ball · 1840–1913
Commonly attributed — not confirmed in an authoritative edition. Cited on Wikiquote to: A Treatise on the Theory of Screws 1900 p. 173.
English (original)
All screws of a given pitch belonging to a system of the third order are the generators of a certain hyperboloid. There is... a different hyperboloid for each pitch. ...all these hyperboloids are concentric.
— Robert Stawell Ball
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