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• Time is a system of measurement that is used to help determine the position and duration of events along a linear frame of reference. Humans have used a variety of instruments and methods to measure time throughout history.

• Fast Facts

  1. The length of a second is determined by the speed of radiation from a Caesium 133 atomClassroom Tools: How Long is a Second?
  2. Time is one of the Fundamental Units in PhysicsUNC.edu: SI Fundamental Units
  3. Greenwich Mean Time is the time it takes the earth to rotate from noon-to-noon and is calculated from the Royal Observatory in Greenwich, EnglandGreenwich Mean Time: What is GMT?

• Quotes

  "The only reason for time is so that everything doesn't happen at once." —Albert EinsteinThink Exist: Time Quotes

  "Time is an illusion. Lunchtime doubly so." —Douglas AdamsQuotations Page: Time Quotes

  "This time, like all times, is a very good one, if we but know what to do with it." —Ralph Waldo EmersonQuotations Page: Time Quotes

• Common Units of Time

  • Millisecond: 0.001 Seconds
  • Second: Base unit of measurement
  • Minute: 60 Seconds
  • Hour: 60 Minutes
  • Day: 24 Hours
  • Week: 7 Days
  • Month: 28-31 Days
  • Year: 12 Months
  • Decade: 10 Yeas
  • Century: 100 Years
  • Millennium: 1,000 Years

• Related Mahalo Pages

  Time Travel | Clocks | Atomic Clock | Atomic Time | Eastern Standard Time | Daylight Saving Time

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