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To convert muon masses to kg: multiply by 1.883531627 × 10⁻²⁸.
mμ ≈ 206.77 × mₑ ≈ 0.1126 × mₚ (proton mass) = 105.66 MeV/c².
For example, 1 Muon Mass (mμ) = 1.883532e-43 Exagram (Eg).
| Muon Mass (mμ) | Exagram (Eg) |
|---|---|
| 0.1 | 1.883532e-44 |
| 0.5 | 9.417658e-44 |
| 1 | 1.883532e-43 |
| 2 | 3.767063e-43 |
| 5 | 9.417658e-43 |
| 10 | 1.883532e-42 |
| 25 | 4.708829e-42 |
| 50 | 9.417658e-42 |
| 100 | 1.883532e-41 |
| 500 | 9.417658e-41 |
| 1000 | 1.883532e-40 |
The muon mass is the rest mass of the muon particle, approximately 1.884 × 10⁻²⁸ kilograms or about 207 times the electron mass.
mμ ≈ 206.77 × mₑ ≈ 0.1126 × mₚ (proton mass) = 105.66 MeV/c².
To convert muon masses to kg: multiply by 1.883531627 × 10⁻²⁸.
Muon tomography (imaging volcanoes, pyramids), muon-catalyzed fusion, and cosmic ray detection.
The muon's discovery prompted physicist I.I. Rabi to quip 'Who ordered that?' — it was completely unexpected.
Muons are not mesons — they're leptons (like electrons), not quark-antiquark pairs.
Think of a muon as a 'fat electron' — same charge, same spin, but 207× heavier. It decays in about 2.2 microseconds.
The exagram equals 10¹⁸ grams or 10¹⁵ kilograms — one trillion tonnes.
1 Eg = 10¹⁸ g = 10¹⁵ kg = 10⁹ tonnes.
To convert Eg to kg: multiply by 10¹⁵. To convert Eg to Pg: multiply by 1,000.
No everyday applications. Describes masses of small moons or large asteroids.
Earth's total mass is about 5.97 × 10⁶ Eg. The entire atmosphere weighs 'only' about 5 Eg.
Hardly ever encountered — most contexts use 'times 10^x kg' notation instead of exagrams.
If you need to express masses between Pg and Earth-masses, the exagram fills that gap: 1 Eg = 10¹⁵ kg.



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