Convert Cubit (Greek) (cubit (greek)) to A.U. of Length (a.u.) instantly.
About these units
Cubit (Greek) (cubit (greek))
The Greek cubit (approximately 0.462 meters) is an ancient unit based on the length of the forearm from elbow to fingertip. It was widely used in Greek architecture, engineering, and construction projects, including temples and civic buildings. Greek architects and surveyors applied the cubit to create proportional structures, ensuring harmony between different elements of a building. Its simplicity — derived from the human body — made it practical for field measurements in the absence of standardized tools. The cubit also held symbolic and ritual significance, often appearing in religious texts, design manuals, and classical literature. Modern historians and archaeologists study the Greek cubit to reconstruct ancient plans and understand the practical realities of classical building techniques.
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.