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[[File:lighterstill.jpg]]
[[File:lighterstill.jpg]][[File:Timelinefull.jpg|center|frame]]
*[http://en.wikipedia.org/wiki/19th_century 1867]
==Definitions==
*1. An undulating, broken, or calibrated line indicating [[successive]] [[points]] of [[time]], used as a [[reference]] line for ascertaining the rate or [[timing]] of something.
*2: In plural - A [[document]] certifying that a person has served an [[apprenticeship]]
*3: a. A line used to [[illustrate]] or [[represent]] a [[chronological]] [[sequence]] of [[events]]; a chronology; a chronological sequence.
:b. A schedule.
==Description==
A '''timeline''' is a way of displaying a list of [[events]] in chronological order, sometimes described as a project artifact. It is typically a graphic [[design]] showing a long bar labeled with dates alongside itself and (usually) events labeled on [[points]] where they would have happened. Timelines are often used in [[education]] to help [[students]] and [[researchers]] with understanding [[events]] and [[trends]] for a particular subject.
Timelines can take use any time [[scale]], depending on the subject and [[data]]. Most timelines use a [[linear]] scale, where a unit of distance is [[equal]] to a set amount of [[time]]. This time scale is dependent on the [[events]] in the timeline. A timeline of [[evolution]] can be over millions of years, whereas a timeline about the September 11, 2001 can take place over minutes. While most timelines use a linear timescale, for very large or small times pans, [http://en.wikipedia.org/wiki/Logarithmic_timeline logarithmic timelines] use a logarithmic scale to depict time.
==Reference==
*Grafton, Anthony; Rosenberg, Daniel (2010), ''Cartographies of Time: A History of the Timeline'', Princeton Architectural Press, pp. 272, ISBN 978-1-56898-763-7
[[Category: General Reference]]
[[Category: General Reference]]
