Data centre and gyroscope: what they have in common

1. Step 1. Data centre — has part — Uninterruptible power supply. Backup power.
2. Step 2. Uninterruptible power supply — has part — Lead–acid battery. A battery.
3. Step 3. Lead–acid battery — is part of — Submarine. Underwater, electric motors run on batteries.
4. Step 4. Submarine — has part — Torpedo. Torpedo armament.
5. Step 5. Torpedo — has part — Gyroscope. Obry’s gyroscope keeps the course.

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