Magnetism and industrial robot: what they have in common

1. Step 1. Magnetism — evolved into — Electromagnetism. Ørsted linked magnetism with current.
2. Step 2. Electromagnetism — is used in — Servomotor. A servo is an electric motor with feedback.
3. Step 3. Servomotor — is part of — Industrial robot. Servo motors drive the joints.

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