Maxwell’s equations and cannon: what they have in common

1. Step 1. Maxwell’s equations — is used in — Electromagnetic waves. Predicted by Maxwell.
2. Step 2. Electromagnetic waves — is used in — Radar. Radio waves reflect off the target.
3. Step 3. Radar — is used in — Anti-aircraft gun. Radar guidance.
4. Step 4. Anti-aircraft gun — is a kind of — Cannon. A gun.

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