Editing Deterministic system (section)

==In physics==

[[Image:Parabolic trajectory.svg|right|thumb|250px|alt=parabolic projectile motion showing velocity vector|The [[trajectory]] of a [[projectile]] launched from a [[cannon]] is modeled by an [[ordinary differential equation|ODE]] that is derived from Newton's second law.]]

Physical laws that are described by [[differential equations]] represent deterministic systems, even though the state of the system at a given point in time may be difficult to describe explicitly.

In [[quantum mechanics]], the [[Schrödinger equation]], which describes the continuous [[time evolution]] of a system's [[wave function]], is deterministic. However, the relationship between a system's wave function and the [[observable]] properties of the system appears to be non-deterministic.