Convert Attoseconds to Shakes
Convert Attoseconds (as) to Shakes (sh) instantly and accurately.
Conversion Formula
sh = as × 1.000000000e-10
About Attoseconds
An attosecond (as) = 10⁻¹⁸ s - the timescale of electron dynamics in atoms. The Bohr-model orbital period in hydrogen is ~152 as. Electron tunnelling through atomic potential barriers takes a few hundred as. The 2023 Nobel Prize in Physics (Agostini, Krausz, L'Huillier) honoured methods for generating sub-100 as pulses via high-harmonic generation in Ti:sapphire lasers. 1 as = 10⁻¹⁸ s = 1,000 zs.
About Shakes
A shake = exactly 10 ns (10⁻⁸ s) - the informal unit for fission prompt-neutron generation time, coined at Los Alamos during the Manhattan Project (1943-1945). A prompt-neutron generation in a supercritical core takes ~1-10 shakes; a full explosive chain reaction unfolds over ~50-100 shakes. The name alludes to 'two shakes of a lamb's tail'. Still used in reactor physics and weapons-design calculations. 1 shake = 10 ns.
Quick Reference Table
| Attoseconds (as) | Shakes (sh) |
|---|---|
| 1 as | 1 × 10-10 sh |
| 2 as | 2 × 10-10 sh |
| 5 as | 5 × 10-10 sh |
| 10 as | 1 × 10-9 sh |
| 25 as | 2.5 × 10-9 sh |
| 50 as | 5 × 10-9 sh |
| 100 as | 1 × 10-8 sh |