Convert Decades to Shakes
Convert Decades (dec) to Shakes (sh) instantly and accurately.
Conversion Formula
sh = dec × 3.155695200e+16
About Decades
A decade = exactly 10 Gregorian years = 315,569,520 s. Climate scientists compute 10-year running means to remove interannual variability; IPCC reports compare decadal temperature anomalies. Moore's Law predicted ~10× transistor density increase per decade. US Census counts are constitutionally mandated each decade. Cultural periods are colloquially labelled by decade (the 1960s, the 1980s). 1 decade = 10 yr.
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
| Decades (dec) | Shakes (sh) |
|---|---|
| 1 dec | 3.156 × 1016 sh |
| 2 dec | 6.311 × 1016 sh |
| 5 dec | 1.578 × 1017 sh |
| 10 dec | 3.156 × 1017 sh |
| 25 dec | 7.889 × 1017 sh |
| 50 dec | 1.578 × 1018 sh |
| 100 dec | 3.156 × 1018 sh |