Stokes drift may occur in all instances of oscillatory flow which are inhomogeneous in space. This is a serious difficulty for attempts to define entropy for time-varying spatially inhomogeneous systems. Procellarum may have also been formed by spatially inhomogeneous heating during the Moon's formation. This machine was capable of solving inhomogeneous differential equations. These are simpler and more symmetric forms of the inhomogeneous Maxwell's equations. These are frequently the solutions to the inhomogeneous electromagnetic wave equation. Suppose we have a constant coefficient, m order inhomogeneous ordinary differential equation. The entropy of inhomogeneous systems is the sum of the entropies of the various subsystems. Examples of inhomogeneous effects include a magnetic field gradient and a distribution of chemical shifts. The response of inhomogeneous plates undergoing explosive welding was analytically modeled in 2011. Magnetically driven ferroelectricity is also caused by inhomogeneous magnetoelectric interaction. Suppose we integrate the inhomogeneous wave equation over this region. This effect appears due to the coupling between inhomogeneous order parameters. This is an abelian group; its elements are called the (inhomogeneous) "n"-cochains. By means of a thermographic camera thermal bridges and inhomogeneous insulation parts can be identified.