Femtometer
A femtometer (fm) is a unit of length in the metric system, equal to one-quadrillionth of a meter (1 fm = 10⁻¹⁵ meters). It is also known as a fermi, named after the physicist Enrico Fermi. Femtometers are used to measure extremely small distances at the subatomic level, such as the size of protons, neutrons, and atomic nuclei. For example, the radius of a proton is about 0.84 femtometers. This unit is commonly used in nuclear physics and particle physics, but it's far too small for everyday measurements.
Vara Conuquera
The vara conuquera is a traditional Spanish unit of length used historically in some parts of Spain and Spanish America, especially in land measurement. It is a regional variation of the vara, which generally measures around 33 inches (about 0.84 meters), but the vara conuquera specifically is associated with the unit used for measuring conucos—small agricultural plots or gardens.
The length of the vara conuquera could vary locally but was typically similar to or a fraction of the standard vara. It was used primarily in rural land surveying and agriculture to define plots and land boundaries.
Summary:
Vara conuquera: a regional variant of the vara
Approximately 0.83 to 0.84 meters (varied by region)
Used historically for measuring small agricultural plots (conucos)
Common in Spanish and Latin American land measurement contexts
Today, the vara conuquera is mostly of historical interest, reflecting old land measurement traditions.
No conversions available for length.