## Explanation

The electron is an incredibly difficult particle to find, let alone measure. However, the electron classical radius is used throughout physics equations as a value that has been derived, rather than a direct measurement of the particle. The radius is the distance from the electron’s core to the edge of the particle.

Particles have a defined radius as eventually its standing waves, which defines its mass and potential energy, convert to traveling waves (radius from the core wave centers). Traveling waves still have an effect on other particles and are measured as a force, although amplitude continues to decrease proportional to distance. The traveling waves are calculated accurately to be the electric force.

## Derivation – Electron Classical Radius

The electron has 10 wave centers (K=10), and these wave centers have an effect on the particle’s wavelength and amplitude. Amplitude is constructive, and becomes K * A_{l} (amplitude); likewise wavelength becomes K * λ_{l} (wavelength). There are a total of K standing waves in each particle, so for the electron, this is 10 wavelengths, or K wavelengths. Thus the radius becomes the number of wavelengths K, multiplied by the electron wavelength distance in meters, K * λ_{l}. This is K^{2 }λ_{l}.

## Classical Constant Form |
## Wave Constant Form |

Using classical constants | Using energy wave constants |

**Calculated Value: **2.8179E-15

**Difference from CODATA:** 0.000%

**Calculated Units**: meters (m)

**G-Factor: **g_{λ}

Its value was calculated and shown to match the known value in the Summary of Calculations table. *The derivation of this constant is available in the Fundamental Physical Constants paper.*