Glass ph electrode and conveyor belt: 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 — uses — Electrochemical reaction. A glass electrode.
3. Step 3. Electrochemical reaction — is used in — Lead–acid battery. A reversible reaction of lead and lead dioxide in sulfuric acid.
4. Step 4. Lead–acid battery — is part of — Submarine. Underwater, electric motors run on batteries.
5. Step 5. Submarine — is made of — Leather. It was covered with leather.
6. Step 6. Leather — is material for — Conveyor belt. The first belts were leather.

Open Evothings