Historical Electromagnetic Coil Diagram - Early Electrical Experimentation #3687241 (License: Personal Use)

This black-and-white line drawing depicts an early electromagnetic coil assembly, likely from a 19th-century scientific publication or patent. The central circular coil (labeled '2') surrounds a core with internal wiring (‘C’), connected via a vertical rod ('b') to a handle or base ('4'), while a hand holds the apparatus for demonstration or operation. The style suggests instructional or experimental use in physics education or invention documentation.

Used in educational resources, museum exhibits, or historical tech articles discussing the evolution of electromagnetism, Faraday’s experiments, or early electric motors/generators; targets users researching vintage scientific instruments or engineering history.