Light Year (ly)
Definition: A light-year (ly) is the distance light travels in one Julian year (365.25 days), approximately 9.461 trillion kilometers or 5.878 trillion miles. It is used for measuring astronomical distances.
History: The term 'light-year' was first introduced in the 19th century to help astronomers express cosmic distances. It replaced astronomical units that were cumbersome for measuring vast space distances.
Current Use: Light-years are used in astronomy to describe distances between stars, galaxies, and other celestial objects. It is crucial for understanding the scale of the universe and cosmic events.
Decameter (dam)
Definition: A decameter (dam) is a unit of length equal to 10 meters. It is commonly used for measuring things like the size of buildings, distances in the field, and in some sports applications.
History: The decameter was created as part of the metric system to provide a convenient intermediate unit between the meter and the hectometer. It is less frequently used in modern contexts but remains part of the metric system.
Current Use: Decameters are used for various tasks, including measuring distances in construction, surveying, and agriculture. They are sometimes used in sports, such as for track and field events.
Quick Conversion Table Light Year (ly) to Decameter (dam)
1 Light Year (ly) equal to 9.46053e+14 Decameter (dam)
5 Light Year (ly) equal to 4.73026e+15 Decameter (dam)
10 Light Year (ly) equal to 9.46053e+15 Decameter (dam)
20 Light Year (ly) equal to 1.89211e+16 Decameter (dam)
30 Light Year (ly) equal to 2.83816e+16 Decameter (dam)
50 Light Year (ly) equal to 4.73026e+16 Decameter (dam)
75 Light Year (ly) equal to 7.09540e+16 Decameter (dam)
100 Light Year (ly) equal to 9.46053e+16 Decameter (dam)