Draft:Outline of time
Order of the past, present, and future
From Wikipedia, the free encyclopedia
The following outline is provided as an overview of and topical guide to time:
Time is the continuous progression of existence that occurs in an apparently irreversible succession from the past, through the present, and into the future. Time dictates all forms of action, age, and causality, being a component quantity of various measurements used to sequence events, to compare the duration of events (or the intervals between them), and to quantify rates of change of quantities in material reality or in the conscious experience. Time is often referred to as a fourth dimension, along with three spatial dimensions.
Below is a structured list of topics related to time:
What type of thing is time?
Time can be described as all of the following:
- a physical phenomenon –
Time in history
General time concepts
- Arrow of time
- Chronology
- Chronon
- Orders of magnitude
- Spacetime
- Time dilation
- Time in physics
- Time standard
Time management
Measuring and keeping track of time
Perception of time
Philosophy of time
Time in religion
Time travel
Time-related organizations
- International Organization for Standardization (ISO) - specifically ISO 8601 for date and time representations.
- National Institute of Standards and Technology (NIST) - responsible for maintaining the official U.S. time and standards.
- International Bureau of Weights and Measures (BIPM) - oversees international time standards.
- Royal Observatory, Greenwich - known for its historical role in timekeeping and the Prime Meridian.
- U.S. Naval Observatory - responsible for astronomical observations and maintaining the U.S. standard time.
- European Space Agency (ESA) - involved in timekeeping related to space missions.
