An is something that takes place; an occurrence and arbitrary point in Time . A significant occurrence or happening. A social gathering or activity.
Individuals define an event's significance subjectively; people actively and retroactively compartmentalize their lives and History in terms of Epoch s delimited by events considered to be significant.
- A special occasion, such as a wedding or other party, is a Social Event .
- 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. Physics also speaks of Event Horizon s and Simultaneity . In Physics and in Science in general, an event may be contrasted with a Process , which occurs across intervals, not just at a point on a timeline. An action or relationship may be misunderstood when viewed as an event or single point of focus. Instead, it may help to view it as part of an integrated process.
- 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 Event s.
- In Philosophy , one might want to distinguish Fact s from Events , and then between physical events, Mental Event s, and Brain Event s.
- 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.
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