Convert millimeter to light year
Please provide values below to convert millimeter [mm] to light year [ly], or Convert light year to millimeter.
How to Convert Millimeter to Light Year
1 mm = 1.0570008340247e-19 ly
Example: convert 15 mm to ly:
15 mm = 15 × 1.0570008340247e-19 ly = 1.58550125103706e-18 ly
Millimeter to Light Year Conversion Table
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Millimeter
A millimeter is a unit of length in the metric system, equal to one-thousandth of a meter.
History/Origin
The prefix "milli-" comes from the Latin word "mille," meaning thousand. The millimeter was part of the original metric system adopted in France in 1795.
Current Use
The millimeter is widely used in engineering and manufacturing for high-precision measurements. It is also a common unit in construction and for measuring small objects.
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.