Instant · Precise · Universal
32 units available
6 categories total
To convert Tm to AU: multiply by 6.685. To convert Tm to km: multiply by 10⁹.
1 Tm = 10¹² m = 10⁹ km = 6.685 AU.
For example, 1 Terameter (Tm) = 3.548691e+26 Electron Radius (Classical) (re).
| Terameter (Tm) | Electron Radius (Classical) (re) |
|---|---|
| 0.1 | 3.548691e+25 |
| 0.5 | 1.774346e+26 |
| 1 | 3.548691e+26 |
| 2 | 7.097382e+26 |
| 5 | 1.774346e+27 |
| 10 | 3.548691e+27 |
| 25 | 8.871728e+27 |
| 50 | 1.774346e+28 |
| 100 | 3.548691e+28 |
| 500 | 1.774346e+29 |
| 1000 | 3.548691e+29 |
The terameter is a unit of length equal to 10¹² meters, or one trillion meters (one billion kilometers).
1 Tm = 10¹² m = 10⁹ km = 6.685 AU.
To convert Tm to AU: multiply by 6.685. To convert Tm to km: multiply by 10⁹.
Expressing outer solar system distances in metric form, though AU is standard.
One light-hour is approximately 1.08 Tm. The distance to Pluto's orbit is roughly 5.9 Tm.
Confusing tera (10¹²) with other large prefixes. Remember: tera comes after giga in the SI scale.
Think of the outer solar system: Saturn is about 1.4 Tm from the Sun, a good mental anchor.
The classical electron radius is a theoretical length scale derived from the electron's charge and mass, approximately 2.818 × 10⁻¹⁵ meters.
re = e²/(4πε₀mec²) ≈ 2.8179 × 10⁻¹⁵ m, where e is electron charge and me is electron mass.
To convert to meters: multiply by 2.8179403262 × 10⁻¹⁵.
Used in calculating X-ray and gamma-ray scattering probabilities off electrons (Thomson and Compton scattering).
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.
Assuming this is the actual physical size of the electron — quantum mechanics shows the electron has no measurable size.
Think of it as the scale at which classical electromagnetic self-energy equals the electron's mass-energy.



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