Standard Model and solar panel: what they have in common

1. Step 1. Standard Model — uses — Quantum mechanics. Quantum field theory.
2. Step 2. Quantum mechanics — evolved from — Photoelectric effect. Quanta of light.
3. Step 3. Photoelectric effect — works like — Photovoltaic effect. The internal and external photoelectric effects.
4. Step 4. Photovoltaic effect — is used in — Solar panel. The photoelectric effect in a semiconductor.

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