Convert Electron Cross Section (σₑ) to Circular Mil (circ mil) instantly.
Electron Cross Section to Circular Mil conversion
1 Electron Cross Section (σₑ) = 1.3128801e-19 Circular Mil (circ mil). To convert Electron Cross Section to Circular Mil, multiply the value by 1.3128801e-19.
| Electron Cross Section (σₑ) | Circular Mil (circ mil) |
|---|---|
| 1 | 1.3128801e-19 |
| 2 | 2.6257602e-19 |
| 5 | 6.5644004e-19 |
| 10 | 1.3128801e-18 |
| 25 | 3.2822002e-18 |
| 50 | 6.5644004e-18 |
| 100 | 1.3128801e-17 |
| 1000 | 1.3128801e-16 |
Frequently asked questions
How many Circular Mil are in one Electron Cross Section?
One Electron Cross Section (σₑ) equals 1.3128801e-19 Circular Mil (circ mil).
How do I convert Electron Cross Section to Circular Mil?
To convert Electron Cross Section to Circular Mil, multiply the value by 1.3128801e-19.
What is 10 Electron Cross Section in Circular Mil?
10 Electron Cross Section = 1.3128801e-18 Circular Mil.
About these units
Electron Cross Section (σₑ)
The electron cross section, often denoted σₑ, is not a fixed unit but rather a physical area representing the effective interaction size of an electron in scattering experiments. It is typically expressed in barns or submultiples such as square femtometers (fm²). Electron cross sections are vital in quantum electrodynamics (QED), X-ray scattering, atomic physics, and materials science. These values describe how electrons interact with photons, atoms, or other electrons, determining phenomena such as absorption, conductivity, and radiation shielding. Because electron interactions are probabilistic, σₑ provides a statistical measure of likelihood rather than a physical surface, illustrating how area units are used conceptually at quantum scales.
Circular Mil (circ mil)
A circular mil is defined as the area of a circle with a diameter of exactly one mil. Because wires and cables have circular cross-sections, the circular mil has become a standard unit in electrical engineering for specifying conductor sizes. One circular mil simplifies calculations because area scales directly with the square of wire diameter without needing π in computations. For example, doubling a wire's diameter increases its circular-mil area fourfold. This makes circular mils extremely convenient for determining ampacity, resistance, and voltage drop in electrical conductors. Even though SI units are common elsewhere, the circular mil remains entrenched in North American electrical codes.