**Oliver Heaviside** (18 May 1850 - 3 February 1925) was a self-taught English electrical engineer, mathematician, and physicist who adapted complex numbers to the study of electrical circuits, invented mathematical techniques to the solution of differential equations (later found to be equivalent to Laplace transforms), reformulated Maxwell's field equations in terms of electric and magnetic forces and energy flux, and independently co-formulated vector analysis. Although at odds with the scientific establishment for most of his life, **Heaviside** changed the face of mathematics and science for years to come. Wikipedia, Heaviside

The term impedance was coined by **Oliver Heaviside** in July 1886.

See Also

**Chronology**
**Free Energy**
**Heaviside Component**
**Heaviside energy flow component**
**James Clerk Maxwell**