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\input zb-matheduc
\iteman{ZMATH 1998d.02768}
\itemau{Thompson, Richard B.}
\itemti{Designing a baseball cover.}
\itemso{Coll. Math. J. 29, No. 1, 48-61 (1998).}
\itemab
Das 130 Jahre alte Probleme, den \"Uberzug eines Baseballs zu entwerfen, kann zu sehr interessanter Mathematik f\"uhren. Eine Differentialgleichung wird entwickelt, die zu ebenen Figuren f\"uhrt. Das Design wird mit dem aktuell verwendeten verglichen.
\itemrv{~}
\itemab
Problems in design, even those of a rather frivolous nature, can produce some very interesting mathematics. Consider the 130-year-old problem of designing the cover for a baseball. Early experimental work on this problem involved the freehand drawing of plane figures. We will use geometric insight and calculus to give a relatively easy solution of the problem in space. Next, a differential equation will be derived that gives a mathematical solution with plane figures, in the style of the early efforts. Finally, we will see how well trial and error have worked, by looking at the cover design that is currently used in the manufacture of major league baseballs. (orig.)
\itemrv{~}
\itemcc{G95}
\itemut{}
\itemli{doi:10.2307/2687639}
\end