Glass jar and voltaic pile: what they have in common

1. Step 1. Glass jar — is part of — Electroscope. It protects against air movement.
2. Step 2. Electroscope — is made of — Gold. With leaves of gold leaf.
3. Step 3. Gold — is material for — Glucose meter. The strip electrodes are gold or carbon.
4. Step 4. Glucose meter — uses — Electrochemical reaction. An electrochemical sensor.
5. Step 5. Electrochemical reaction — is used in — Voltaic pile. Current arises from the reaction of dissimilar metals with an electrolyte.

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