Cinématographe and electrical grid: what they have in common

1. Step 1. Cinématographe — has part — Lens. A lens.
2. Step 2. Lens — is part of — Spectroscope. A collimator.
3. Step 3. Spectroscope — is used in — Helium. Helium was discovered by spectroscopy in the solar spectrum.
4. Step 4. Helium — is material for — Large Hadron Collider. It is cooled with superfluid helium.
5. Step 5. Large Hadron Collider — uses — Data centre. A grid for processing data.
6. Step 6. Data centre — uses — Electrical grid. Power.

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