Convert Shakes to Attoseconds
Convert Shakes (sh) to Attoseconds (as) instantly and accurately.
Conversion Formula
as = sh × 10000000000
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.
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.
Quick Reference Table
| Shakes (sh) | Attoseconds (as) |
|---|---|
| 1 sh | 1 × 1010 as |
| 2 sh | 2 × 1010 as |
| 5 sh | 5 × 1010 as |
| 10 sh | 1 × 1011 as |
| 25 sh | 2.5 × 1011 as |
| 50 sh | 5 × 1011 as |
| 100 sh | 1 × 1012 as |