Superconductivity and rope: what they have in common

1. Step 1. Superconductivity — uses — Absolute zero. At temperatures close to absolute zero.
2. Step 2. Absolute zero — uses — Thermodynamics. The thermodynamic scale.
3. Step 3. Thermodynamics — uses — Conservation of energy. The first law of thermodynamics is the conservation of energy.
4. Step 4. Conservation of energy — is used in — Yo-yo. Potential → kinetic energy.
5. Step 5. Yo-yo — has part — Rope. A thread.

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