Glass ph electrode and particle accelerator: what they have in common

1. Step 1. Glass ph electrode — is part of — pH meter. Sensitive to the concentration of hydrogen ions.
2. Step 2. pH meter — has part — Amplifier. It amplifies the weak signal of the electrode.
3. Step 3. Amplifier — has part — Triode. Tube amplifiers.
4. Step 4. Triode — uses — Vacuum. It works in a vacuum.
5. Step 5. Vacuum — is used in — Particle accelerator. A vacuum chamber.

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