An event is something that takes place. It also refers to an important happening or activity.

Individuals define an event's significance subjectively; people actively and retroactively compartmentalize their lives and history in terms of epochs delimited by events considered to be significant.

Culture

• A special occasion, such as a wedding or other party, is a social event.

Science

• In physics (and in some kinds of philosophy), an event occurs at a point in time which can be distinguished because the state of the world changed. Something was different before and after the event.
• In special relativity (and general relativity), an event is a point in the spacetime continuum, i.e. it has a position in space and time.
• In experimental particle physics, an event refers to a set of elementary particle interactions recorded in a brief span of time.
• In probability a possible outcome of an experiment is called an elementary event, while a set of those (a subset of all) is called simply an event. (See event (probability theory).)
• In biology one speaks of extinction events.
• In philosophy, one might want to distinguish facts from events, and then between physical events, mental events, and brain events.
• Weinberg's Law of Twins states that most of the time, no matter how much effort one expends, no event of any great significance will result.

Telecommunications

• In information processing, an event is a change in the properties received by an observer after being transmitted from an object.
• In computer science, an event is a software message that indicates something has happened. See event-driven programming. A number of protocols, such as MIDI, are also event-based.

Ereignis | Event | Event | イベント | События | Evenemang