Year/Related Articles: Difference between revisions
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==Parent topics== | ==Parent topics== | ||
{{r|Astronomy}} | |||
{{r|Planet}} | |||
{{r|Earth}} | |||
{{r|Calendar}} | |||
==Subtopics== | ==Subtopics== | ||
{{r|Month}} | |||
{{r|Week}} | |||
{{r|Day}} | |||
{{r|Equinox}} | |||
{{r|Aphelion}} | |||
{{r|Perihelion}} | |||
{{r|Leap year}} | |||
==Other related topics== | ==Other related topics== | ||
{{r|Light day}} | {{r|Light day}} | ||
{{r|Light hour}} | {{r|Light hour}} | ||
| Line 31: | Line 26: | ||
{{r|Perennial plant}} | {{r|Perennial plant}} | ||
{{r|Sundial}} | {{r|Sundial}} | ||
Latest revision as of 09:18, 17 August 2009
- See also changes related to Year, or pages that link to Year or to this page or whose text contains "Year".
Parent topics
- Astronomy [r]: The study of objects and processes in the observable universe, e.g. stars, planets, comets or asteroids. [e]
- Planet [r]: A cosmic body orbiting a star. [e]
- Earth [r]: Please do not use this term in your topic list, because there is no single article for it. Please substitute a more precise term. See Earth (disambiguation) for a list of available, more precise, topics. Please add a new usage if needed.
- Calendar [r]: A method used for keeping time on a scale of years. [e]
Subtopics
- Month [r]: Unit of time originally corresponding approximately to one cycle of the moon's phases, or about 30 days or 4 weeks. [e]
- Week [r]: Time unit equal to a number of days, now usually seven calendar days, previously weeks of between 4 and 20 days have been used historically in various places. [e]
- Day [r]: Defined as 86,400 seconds, using the SI definition of second. [e]
- Equinox [r]: Add brief definition or description
- Aphelion [r]: Add brief definition or description
- Perihelion [r]: Add brief definition or description
- Leap year [r]: Add brief definition or description
- Light day [r]: Distance that light travels in a vacuum in one day; 1 light day = 25,902,068,371,200 m = 2.5902067 * 1013m. [e]
- Light hour [r]: Distance that the light travels in vacuum in one hour, 1.0792528 * 1012m [e]
- Light minute [r]: Distance that light travels in vacuum in one minute; 17,987,547,480 m = 1.7987547 * 1010m. [e]
- Light second [r]: Distance that light travels in vacuum in one second; 2.99792458 * 108m. [e]
- Light week [r]: Distance that light travels in a vacuum in one week; 1 light week = 1.81314469 * 1011km. [e]
- Light year [r]: Distance that light travels in vacuum in one year; 9,460,730,472,580.800 km = 9.4607304 * 1012 km. [e]
- Mathematics [r]: The study of quantities, structures, their relations, and changes thereof. [e]
- Perennial plant [r]: A plant that lives for more than two years. [e]
- Sundial [r]: An instrument for measuring time, using the position of the sun in the sky. [e]