Can lid with pull tab and camera: what they have in common

1. Step 1. Can lid with pull tab — is part of — Aluminium can. A pull ring.
2. Step 2. Aluminium can — evolved from — Tin can. A tin can.
3. Step 3. Tin can — is made of — Tin. Tinplate.
4. Step 4. Tin — is material for — Capacitor. The plates are made of tin foil.
5. Step 5. Capacitor — is part of — Photographic flash. Energy is stored in a capacitor.
6. Step 6. Photographic flash — is part of — Camera. A flash.

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