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Furlong


A furlong is a traditional unit of distance used primarily in agriculture and horse racing. It is equal to 220 yards, 660 feet, or 1/8 of a mile (approximately 201.168 meters).


The word "furlong" comes from the Old English words furh (furrow) and lang (long), originally referring to the length of a furrow in a 10-acre field. It was historically used in England to measure field lengths for plowing.


In modern times, the furlong is rarely used outside of horse racing, where race distances are still often given in furlongs, especially in the United Kingdom and the United States.


Conversions:



  • 1 furlong = 660 feet



  • 1 furlong = 220 yards



  • 1 furlong ≈ 201.168 meters



  • 8 furlongs = 1 mile



Although considered outdated for most uses, the furlong remains a culturally significant unit in some specific fields.


Astronomical Unit (a.u.) of Length


The astronomical unit (a.u.) is a unit of length used primarily in astronomy to describe distances within our solar system. It is defined as the average distance between the Earth and the Sun.


Key facts:



  • 1 astronomical unit ≈ 149,597,870.7 kilometers (about 93 million miles)



  • Used to measure distances between planets and other objects in the solar system



  • Provides a convenient scale for expressing space distances that are too large for kilometers but too small for light-years



The astronomical unit helps astronomers communicate and calculate orbits, planetary positions, and space missions with clarity and precision.




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