Foot (ft)
Definition: A foot (ft) is an imperial unit of length equal to 0.3048 meters or 12 inches. It is widely used in real estate, construction, and aviation for measuring height and distances.
History: The foot has been used as a unit of length since ancient times, originally based on the length of a human foot. It was standardized to 12 inches in England during the 13th century.
Current Use: Feet are commonly used in the US, UK, and Canada for measuring heights of buildings, doorways, and human stature. It remains an important unit in architecture and sports field measurements.
Exameter (Em)
Definition: An exameter (Em) is a unit of length equal to 10^18 meters. It is used primarily in theoretical physics and astronomy for describing vast cosmic distances.
History: As the metric system expanded, large-scale units like the exameter were introduced to accommodate astronomical and scientific measurements requiring extremely large distances.
Current Use: Exameters are rarely used in everyday applications but appear in astrophysics when discussing interstellar distances, black hole measurements, and the size of cosmic structures.
Quick Conversion Table Foot (ft) to Exameter (Em)
1 Foot (ft) equal to 3.0480e-19 Exameter (Em)
5 Foot (ft) equal to 1.5240e-18 Exameter (Em)
10 Foot (ft) equal to 3.0480e-18 Exameter (Em)
20 Foot (ft) equal to 6.0960e-18 Exameter (Em)
30 Foot (ft) equal to 9.1440e-18 Exameter (Em)
50 Foot (ft) equal to 1.5240e-17 Exameter (Em)
75 Foot (ft) equal to 2.2860e-17 Exameter (Em)
100 Foot (ft) equal to 3.0480e-17 Exameter (Em)