Convert League (Statute) (st.league) to A.U. of Length (a.u.) instantly.
About these units
League (Statute) (st.league)
The statute league was historically defined as 3 statute miles (~4.828 km). It originated as a measure of distance a person could travel on foot in about an hour. Leagues were widely used in exploration, mapping, and maritime navigation prior to the universal adoption of standardized miles and kilometers. They also appear extensively in literature, conveying narrative distances in a way more relatable to the human scale. Though obsolete in modern usage, the statute league provides cultural and historical context for maps, journals, and records from the 16th through 19th centuries.
A.U. of Length (a.u.)
The atomic unit of length, also known as the Bohr radius unit in atomic units, is approximately 5.29177 × 10⁻¹¹ meters. It is defined as the radius of the lowest-energy orbital of the hydrogen atom, providing a natural scale for describing atomic and quantum mechanical systems. Atomic units were devised to simplify equations in quantum chemistry and atomic physics by normalizing fundamental constants such as electron charge, Planck's constant, and electron mass to 1. In this system, many equations become dimensionless and far easier to manipulate mathematically. The atomic unit of length is essential in molecular orbital calculations, quantum simulations, and the study of electron behavior in atoms and molecules. Its use reflects an approach to physics in which units are chosen to match the natural scales of the systems being studied.