Convert Shakes to Centuries
Convert Shakes (sh) to Centuries (cent) instantly and accurately.
Conversion Formula
cent = sh × 3.168873851e-18
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 Centuries
A century = exactly 100 Gregorian years ≈ 3.156 × 10⁹ s. Standard unit of historical periodisation (the 20th century, the 18th-century Enlightenment). IPCC projects warming and sea-level rise on century timescales. Precession of the equinoxes advances ~1.39°/century, so zodiac constellations no longer match their named seasons. Ice-core and radiocarbon records are commonly displayed at century resolution. 1 century = 100 yr.
Quick Reference Table
| Shakes (sh) | Centuries (cent) |
|---|---|
| 1 sh | 3.169 × 10-18 cent |
| 2 sh | 6.338 × 10-18 cent |
| 5 sh | 1.584 × 10-17 cent |
| 10 sh | 3.169 × 10-17 cent |
| 25 sh | 7.922 × 10-17 cent |
| 50 sh | 1.584 × 10-16 cent |
| 100 sh | 3.169 × 10-16 cent |