Non-stick coating layer and fitness tracker: what they have in common

1. Step 1. Non-stick coating layer — is part of — Non-stick pan. A Teflon coating.
2. Step 2. Non-stick pan — is made of — Teflon. A Teflon coating.
3. Step 3. Teflon — uses — Friction. A very low coefficient of friction.
4. Step 4. Friction — is used in — Bicycle brake. Pads press against the rim or disc and shed speed through friction.
5. Step 5. Bicycle brake — is made of — Vulcanized rubber. The pads are rubber.
6. Step 6. Vulcanized rubber — is material for — Fitness tracker. The strap is silicone.

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