Hygrometer and turbojet engine: what they have in common

1. Step 1. Hygrometer — is made of — Plant fibre. Humidity was shown by a fibre that changed length.
2. Step 2. Plant fibre — is material for — Wick. A wick is twisted from plant fibres.
3. Step 3. Wick — is part of — Kerosene lamp. A wick.
4. Step 4. Kerosene lamp — uses — Kerosene. The fuel.
5. Step 5. Kerosene — is used in — Turbojet engine. Jet fuel is kerosene.

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