We use this plane called the "Laplace plane" to solve problem in control-engineering, second order systems. Can anyone help explain the Laplace plane in simple words? I find the wiki article too fancy for me... it says that it "is a mean or reference plane about whose axis the instantaneous orbital plane of a satellite precesses".. But I'm doing control engineering. I'm confused how these two are related if I solve problems that looks like an electronics circuit and I have to use the laplace plane For instance, A capacitor in electronics is "C", in the Laplace plane, it's 1/CS An inductor in electronics is L, in the Laplace plane, it's LS Resistance, Battery and Voltage seem to be the same in both planes... I'm just trying to understand what it means-- this plane. I do know what second order system means.