Electron Radius (Classical) to Inch Converter
Unit Converter
Instant · Precise · Universal
32 units available
6 categories total
How to Convert Electron Radius (Classical) to Inch
To convert to meters: multiply by 2.8179403262 × 10⁻¹⁵.
re = e²/(4πε₀mec²) ≈ 2.8179 × 10⁻¹⁵ m, where e is electron charge and me is electron mass.
For example, 1 Electron Radius (Classical) (re) = 1.109425e-13 Inch (in).
Electron Radius (Classical) to Inch — Common Values
| Electron Radius (Classical) (re) | Inch (in) |
|---|---|
| 0.1 | 1.109425e-14 |
| 0.5 | 5.547127e-14 |
| 1 | 1.109425e-13 |
| 2 | 2.218851e-13 |
| 5 | 5.547127e-13 |
| 10 | 1.109425e-12 |
| 25 | 2.773563e-12 |
| 50 | 5.547127e-12 |
| 100 | 1.109425e-11 |
| 500 | 5.547127e-11 |
| 1000 | 1.109425e-10 |
About Electron Radius (Classical) (re)
Definition
The classical electron radius is a theoretical length scale derived from the electron's charge and mass, approximately 2.818 × 10⁻¹⁵ meters.
Mathematical Relationship
re = e²/(4πε₀mec²) ≈ 2.8179 × 10⁻¹⁵ m, where e is electron charge and me is electron mass.
Conversion Formula
To convert to meters: multiply by 2.8179403262 × 10⁻¹⁵.
Practical Applications
Used in calculating X-ray and gamma-ray scattering probabilities off electrons (Thomson and Compton scattering).
Interesting Facts
Despite its name, the electron is a point particle in quantum theory — the 'classical radius' is a theoretical construct, not the electron's actual size.
Common Mistakes
Assuming this is the actual physical size of the electron — quantum mechanics shows the electron has no measurable size.
Educational Tips
Think of it as the scale at which classical electromagnetic self-energy equals the electron's mass-energy.
About Inch (in)
Definition
The inch is a unit of length in the imperial and US customary systems, defined as exactly 25.4 millimeters.
Mathematical Relationship
1 in = 25.4 mm = 2.54 cm = 1/12 ft = 1/36 yd.
Conversion Formula
To convert inches to cm: multiply by 2.54. To convert cm to inches: divide by 2.54.
Practical Applications
Screen sizes (TVs, monitors), drill bit sizes, pipe diameters, screw dimensions, and rainfall measurement in the US.
Interesting Facts
King Edward II of England defined the inch as 'three grains of barley, dry and round, placed end to end' in 1324.
Common Mistakes
Forgetting that fractions of an inch use powers of 2 (1/2, 1/4, 1/8, 1/16), not decimal subdivisions like metric.
Educational Tips
Your thumb from tip to first knuckle is roughly 1 inch — a handy (literal) reference.