Golf ball and electronic calculator: what they have in common

1. Step 1. Golf ball — is made of — Gutta-percha. “Gutty” balls were gutta-percha.
2. Step 2. Gutta-percha — is part of — Transatlantic cable. Insulation.
3. Step 3. Transatlantic cable — has part — Copper wire. A copper core.
4. Step 4. Copper wire — is part of — Electric generator. Windings.
5. Step 5. Electric generator — includes — Solar panel. A solar panel also generates electricity — from light rather than rotation.
6. Step 6. Solar panel — is part of — Electronic calculator. Many run on a solar cell.

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