Vara de Tarea
The vara de tarea is a traditional Spanish and Latin American unit of area used especially in land measurement and agriculture. It combines the vara, a unit of length, with the tarea, a unit of area.
The vara is roughly 33 inches (about 0.84 meters), though it varies by region.
A tarea typically refers to an area equal to 100 square varas, but this can differ locally.
Therefore, a vara de tarea is often used to express land area based on square varas.
This unit remains in use in some rural parts of Latin America for land deeds and agricultural measurements, reflecting historical Spanish colonial measurement systems.
Summary:
Vara ≈ 0.84 meters
Tarea ≈ 100 square varas (area)
Vara de tarea = unit combining length and area for land measurement
Common in Spanish-speaking countries’ historical land records
Fermi
A fermi is a unit of length used in nuclear physics to measure extremely small distances, such as the size of atomic nuclei. It is equal to 1 femtometer (fm), which is 10⁻¹⁵ meters.
The unit is named after the Italian physicist Enrico Fermi, known for his work in nuclear physics.
Key facts:
1 fermi = 1 femtometer = 10⁻¹⁵ meters
Used to measure nuclear dimensions and particle sizes
Essential in the study of nuclear and particle physics
The fermi is vital for describing distances at the subatomic scale, much smaller than atoms and molecules.
No conversions available for length.