Strain gauge and nuclear reactor: what they have in common

1. Step 1. Strain gauge — uses — Electrical resistance. Resistance changes under strain.
2. Step 2. Electrical resistance — is used in — Power line. High voltage reduces resistive losses.
3. Step 3. Power line — is part of — Electrical grid. Power lines.
4. Step 4. Electrical grid — has part — Transformer. Transformer substations.
5. Step 5. Transformer — is part of — Nuclear power plant. Transformers step up the voltage so the plant's power can travel far.
6. Step 6. Nuclear power plant — has part — Nuclear reactor. The reactor heats the coolant.

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