Rheostat and paper machine: what they have in common

1. Step 1. Rheostat — is made of — Nichrome. The winding is made of nichrome wire, which has a high resistance.
2. Step 2. Nichrome — is material for — Heating element. The coil is made of nichrome: it has high resistance and does not oxidize when hot.
3. Step 3. Heating element — is part of — Washing machine. A heating element.
4. Step 4. Washing machine — has part — Ball bearing. Drum bearings.
5. Step 5. Ball bearing — is part of — Conveyor belt. The rollers turn on bearings.
6. Step 6. Conveyor belt — works like — Paper machine. Fourdrinier’s endless wire mesh moves like a conveyor belt, forming the web of paper.

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