Event

Full Title or Meme

In particle physics, events are often described as well=localized interactions at specific points in spacetime.

The order of events in spacetime can be described using the concept of a “worldline” in space.

A worldline is a sequence of events that describe the path of an Particle through spacetime.

The events in a worldline are ordered by time.

The path of the Particle can be described as a sequence of events.

The set of observables is a subset of the set of events.

Time-like connected events are ordered. That is, Lorentz transformations don't change the order of events.

Space-like connected events are not ordered. That is, Lorentz transformations do change the order of some events.

Scalar quantities include energy and information (order).

Vector quantities include force and momentum.