Golf ball
device · 1898 · Electric age
A ball with a rubber-thread core and dimples (Haskell).
What it is made of
- Rubber core — has part. A rubber core.
- Dimpled cover — has part. The dimples reduce drag.
Principles and materials it uses
- Drag — uses. The dimples reduce drag.
- Gutta-percha — is made of. “Gutty” balls were gutta-percha.
- Vulcanized rubber — is made of. Haskell’s ball has rubber thread wound around a core.
What it is a kind of
- Ball — is a kind of. A ball.