Physical Models

This page will serve as a refresher for various different engineering disciplines on how physical devices are modeled. Models will be displayed in both time-domain and Laplace-domain input/output characteristics. The only information that is going to be displayed here will be the ones that are contributed by knowledgeable contributors.

Electrical Systems

Component	Time-Domain	Laplace	Fourier
Resistor	R	R	R
Capacitor	${\displaystyle i=C{\frac {dv}{dt}}}$	${\displaystyle G(s)={\frac {1}{sC}}}$	${\displaystyle G(j\omega )={\frac {1}{j\omega C}}}$
Inductor	${\displaystyle v=L{\frac {di}{dt}}}$	${\displaystyle G(s)=sL}$	${\displaystyle G(j\omega )=j\omega L}$

Mechanical Systems

Civil/Construction Systems

Chemical Systems