Neutralizing brushes and bell: what they have in common

1. Step 1. Neutralizing brushes — is part of — Electrostatic machine. Neutralizers.
2. Step 2. Electrostatic machine — is used in — Leyden jar. Charged by the machine.
3. Step 3. Leyden jar — evolved into — Capacitor. The Leyden jar was the first capacitor.
4. Step 4. Capacitor — is part of — Tesla coil. A capacitor.
5. Step 5. Tesla coil — uses — Resonance. A resonant circuit.
6. Step 6. Resonance — is used in — Bell. The sound.

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