Convert inch (US survey) to light year
Please provide values below to convert inch (US survey) [in (US)] to light year [ly], or Convert light year to inch (US survey).
How to Convert Inch (Us Survey) to Light Year
1 in (US) = 2.68478748798699e-18 ly
Example: convert 15 in (US) to ly:
15 in (US) = 15 × 2.68478748798699e-18 ly = 4.02718123198048e-17 ly
Inch (Us Survey) to Light Year Conversion Table
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Inch (Us Survey)
The U.S. survey inch is a unit of length equal to 1/12 of a U.S. survey foot.
History/Origin
The U.S. survey inch is based on the U.S. survey foot, which was defined such that 1 meter is exactly 39.37 inches. The use of survey units was officially phased out in 2022.
Current Use
The U.S. survey inch was used for land surveying in the United States.
Light Year
A light-year is the distance that light travels in a vacuum in one Julian year.
History/Origin
The concept of the light-year as a unit of distance in astronomy emerged in the mid-19th century. The first recorded use of the term was in a German astronomical publication in 1851.
Current Use
The light-year is used to express distances to stars and other astronomical objects on a galactic and intergalactic scale, especially in popular science and non-specialist contexts.