Nuclear magnetic resonance and rope: what they have in common

1. Step 1. Nuclear magnetic resonance — uses — Electromagnetic waves. Radio pulses.
2. Step 2. Electromagnetic waves — evolved from — Electromagnetic induction. Maxwell’s equations, which generalized induction, predicted electromagnetic waves.
3. Step 3. Electromagnetic induction — is used in — Electric toothbrush. Wireless charging by induction.
4. Step 4. Electric toothbrush — evolved from — Toothbrush. A motorized toothbrush.
5. Step 5. Toothbrush — is made of — Plant fibre. The bristles were hog hair, later nylon.
6. Step 6. Plant fibre — is material for — Rope. Rope is twisted from plant fibres.

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