He apparently invented it [1], or at least popularized it via Laplace transforms for solving differential equations. [1]: http://hsm.stackexchange.com/question

He apparently invented it [1], or at least popularized it via Laplace transforms for solving differential equations. [1]: http://hsm.stackexchange.com/questions/1984/why-is-the-heaviside-step-function-named-after-heaviside http://hsm.stackexchange.com/questions/1984/why-is-the-heavi...