Convert A.U. of Length (a.u.) to Electron Radius (re) instantly.
A.U. of Length to Electron Radius conversion
1 A.U. of Length (a.u.) = 18778.862 Electron Radius (re). To convert A.U. of Length to Electron Radius, multiply the value by 18778.862.
| A.U. of Length (a.u.) | Electron Radius (re) |
|---|---|
| 1 | 18778.862 |
| 2 | 37557.725 |
| 5 | 93894.312 |
| 10 | 187788.62 |
| 25 | 469471.56 |
| 50 | 938943.12 |
| 100 | 1877886.2 |
| 1000 | 18778862 |
Frequently asked questions
How many Electron Radius are in one A.U. of Length?
One A.U. of Length (a.u.) equals 18778.862 Electron Radius (re).
How do I convert A.U. of Length to Electron Radius?
To convert A.U. of Length to Electron Radius, multiply the value by 18778.862.
What is 10 A.U. of Length in Electron Radius?
10 A.U. of Length = 187788.62 Electron Radius.
About these units
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.
Electron Radius (re)
The classical electron radius, approximately 2.818 × 10⁻¹⁵ meters, is a theoretical value derived from classical electromagnetic theory rather than an actual measured size. It represents the radius a charged sphere would need to have in order for its electrostatic self-energy to equal the electron's rest energy. Although electrons are now understood to be point-like or extremely small compared to this radius, the classical electron radius remains useful in scattering theory, especially in calculations involving Thomson scattering — the elastic scattering of electromagnetic radiation by free electrons. Thus, while not a physical dimension of the electron, the classical radius serves as a meaningful parameter in specific areas of physics and retains importance in radiation modeling and plasma physics.