What does light-second mean?
Definitions for light-second
light-sec·ond
This dictionary definitions page includes all the possible meanings, example usage and translations of the word light-second.
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Wikipedia
Light-second
The light-second is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space in one second, and is equal to exactly 299792458 metres (983571056 ft). Just as the second forms the basis for other units of time, the light-second can form the basis for other units of length, ranging from the light-nanosecond (299.8 mm or just under one international foot) to the light-minute, light-hour and light-day, which are sometimes used in popular science publications. The more commonly used light-year is also currently defined to be equal to precisely 31557600 light-seconds, since the definition of a year is based on a Julian year (not the Gregorian year) of exactly 365.25 days, each of exactly 86400 SI seconds.
Wikidata
Light-second
A light-second is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space in one second, and is equal to exactly 299,792,458 metres. It is just over 186,282 miles and almost 9.84×10^8 feet. Just as the second forms the basis for other units of time, the light-second can form the basis for other units of length, ranging from the light-nanosecond to the light-minute, light-hour and light-day, which are sometimes used in popular science publications. The more commonly used light-year is also presently defined to be equal to precisely 31557600 light-seconds, since the definition of a year is based on a Julian year of exactly 365.25 days, each of exactly 86400 SI seconds.
Numerology
Chaldean Numerology
The numerical value of light-second in Chaldean Numerology is: 7
Pythagorean Numerology
The numerical value of light-second in Pythagorean Numerology is: 8
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"light-second." Definitions.net. STANDS4 LLC, 2024. Web. 18 Apr. 2024. <https://www.definitions.net/definition/light-second>.
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