Non-stick pan and atomic clock: what they have in common

1. Step 1. Non-stick pan — is made of — Teflon. A Teflon coating.
2. Step 2. Teflon — uses — Friction. A very low coefficient of friction.
3. Step 3. Friction — is used in — Violin. The bow sets the string vibrating by stick-slip friction.
4. Step 4. Violin — uses — Resonance. Resonance of the body.
5. Step 5. Resonance — is used in — Quartz clock. Resonance of the crystal.
6. Step 6. Quartz clock — evolved into — Atomic clock. The quartz oscillator is tuned to an atomic standard.

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