Band theory and smart meter: what they have in common

1. Step 1. Band theory — uses — Quantum mechanics. The quantum theory of solids.
2. Step 2. Quantum mechanics — is used in — Quantum dots. Size quantization.
3. Step 3. Quantum dots — is part of — Flat-screen TV. QLED televisions.
4. Step 4. Flat-screen TV — has part — Liquid-crystal display. An LCD panel.
5. Step 5. Liquid-crystal display — is part of — Smart meter. A display.

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