# Light week/Related Articles

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A list of Citizendium articles, and planned articles, about Light week.

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• 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 month [r]: The distance, ${\displaystyle 7.7706205*10^{14}}$ meters, that light travels in one month. [e]
• Light second [r]: Distance that light travels in vacuum in one second; 2.99792458 * 108m. [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]
• Light [r]: The part of the electromagnetic spectrum visible to a species' biological eye. [e]
• Second [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 Second (disambiguation) for a list of available, more precise, topics. Please add a new usage if needed.
• 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]
• Year [r]: A unit of time measurement that corresponds to one revolution of the earth around the sun, approximately 365¼ days. [e]