Electron microscope and lead–acid battery: what they have in common

1. Step 1. Electron microscope — uses — Electromagnet. Magnetic lenses.
2. Step 2. Electromagnet — is part of — Cyclotron. A magnet.
3. Step 3. Cyclotron — evolved into — Large Hadron Collider. Ring accelerators.
4. Step 4. Large Hadron Collider — uses — Data centre. A grid for processing data.
5. Step 5. Data centre — has part — Uninterruptible power supply. Backup power.
6. Step 6. Uninterruptible power supply — has part — Lead–acid battery. A battery.

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