Foot to Electron Radius (Classical) Converter
Unit Converter
Instant · Precise · Universal
32 units available
6 categories total
How to Convert Foot to Electron Radius (Classical)
To convert feet to meters: multiply by 0.3048. To convert meters to feet: multiply by 3.28084.
1 ft = 12 in = 0.3048 m = 1/3 yd = 30.48 cm.
For example, 1 Foot (ft) = 1.081641e+14 Electron Radius (Classical) (re).
Foot to Electron Radius (Classical) — Common Values
| Foot (ft) | Electron Radius (Classical) (re) |
|---|---|
| 0.1 | 1.081641e+13 |
| 0.5 | 5.408205e+13 |
| 1 | 1.081641e+14 |
| 2 | 2.163282e+14 |
| 5 | 5.408205e+14 |
| 10 | 1.081641e+15 |
| 25 | 2.704103e+15 |
| 50 | 5.408205e+15 |
| 100 | 1.081641e+16 |
| 500 | 5.408205e+16 |
| 1000 | 1.081641e+17 |
About Foot (ft)
Definition
The foot is a unit of length equal to 12 inches or exactly 0.3048 meters.
Mathematical Relationship
1 ft = 12 in = 0.3048 m = 1/3 yd = 30.48 cm.
Conversion Formula
To convert feet to meters: multiply by 0.3048. To convert meters to feet: multiply by 3.28084.
Practical Applications
Building plans, ceiling heights, personal height, pool depth, altitude in aviation, and real estate listings.
Interesting Facts
The international foot (0.3048 m exactly) differs slightly from the US survey foot (1200/3937 m), which was deprecated in 2023.
Common Mistakes
Confusing the foot with 30 cm (it's 30.48 cm). Also, forgetting that 5′10″ is not 5.10 feet — it's 5 feet 10 inches = 5.833 feet.
Educational Tips
There are 3 feet in a yard and 5,280 feet in a mile. A 6-foot person is about 1.83 meters tall.
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.