Fluorescent viewing screen and air conditioner: what they have in common

1. Step 1. Fluorescent viewing screen — is part of — Electron microscope. Or an image detector.
2. Step 2. Electron microscope — uses — Electromagnet. Magnetic lenses.
3. Step 3. Electromagnet — is part of — Cyclotron. A magnet.
4. Step 4. Cyclotron — evolved into — Large Hadron Collider. Ring accelerators.
5. Step 5. Large Hadron Collider — uses — Data centre. A grid for processing data.
6. Step 6. Data centre — has part — Air conditioner. Cooling.

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