Polarization of light and boiler: what they have in common

1. Step 1. Polarization of light — is used in — Polarizing filter. It passes one polarization.
2. Step 2. Polarizing filter — is part of — Liquid-crystal display. Polarizers.
3. Step 3. Liquid-crystal display — is part of — Laptop. An LCD screen.
4. Step 4. Laptop — has part — Heat pipe. Heat pipes.
5. Step 5. Heat pipe — uses — Latent heat. Evaporation and condensation.
6. Step 6. Latent heat — is used in — Boiler. Evaporation needs latent heat.

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