Convert Vara de Tarea (vara de tarea) to Bohr Radius (a₀) instantly.
About these units
Vara de Tarea (vara de tarea)
The Vara de Tarea is a Spanish-derived unit of length historically used in Latin America, approximately 0.8359 meters. It was commonly employed for land measurement, especially in the context of agricultural plots, or "tareas," which were standard land divisions for farming and tax purposes. The unit reflects the broader Spanish colonial influence in the Americas, where local adaptations often resulted in slight variations of the original metric equivalent depending on the region. Farmers, surveyors, and colonial administrators relied on the Vara de Tarea to measure property, organize irrigation systems, and define communal lands. Although largely obsolete today due to metrication, the Vara de Tarea remains significant for interpreting historical land deeds, colonial documents, and regional agricultural practices. Understanding it provides insight into land management and local economies in historical Spanish America.
Bohr Radius (a₀)
The Bohr radius, equal to approximately 5.29177 × 10⁻¹¹ meters, is the most probable distance between the electron and nucleus in the ground state of hydrogen according to the Bohr model. While modern quantum mechanics has evolved far beyond the Bohr model, the radius remains a remarkably accurate approximation for average atomic dimensions. The Bohr radius acts as a natural "yardstick" for the size of atoms and is frequently used in atomic physics and quantum chemistry. Many atomic properties — orbital sizes, electron probability distributions, and energy levels — are conveniently expressed in multiples of the Bohr radius. Because it reflects fundamental constants, including Planck's constant and the electron charge, the Bohr radius also appears in theoretical analyses of physical systems and helps unify atomic physics concepts across different contexts.