Warp-weighted loom and lead–acid battery: what they have in common

1. Step 1. Warp-weighted loom — is made of — Clay. The warp threads were tensioned with clay weights.
2. Step 2. Clay — is material for — Brick. Bricks are moulded from clay.
3. Step 3. Brick — is material for — Chemical plant. The furnaces and towers are brick.
4. Step 4. Chemical plant — uses — Sulfuric acid. The first chemical plants produced sulfuric acid and soda.
5. Step 5. Sulfuric acid — is used in — Lead–acid battery. The electrolyte.

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