Convert Barns to Roods
Convert Barns (b) to Roods (ro) instantly and accurately.
Conversion Formula
ro = b × 9.884215259e-32
About Barns
A barn (b) is a unit of area used in nuclear and particle physics to measure effective cross-sections of atomic nuclei and particle interaction probabilities. Equal to 10⁻²⁸ m² (10⁻²⁴ cm²), it was humorously named during the Manhattan Project - physicists joked that uranium nuclei were 'as big as a barn' at the subatomic scale. Particle physics experiments at accelerators like CERN report cross-sections in millibarns (mb), microbarns (μb), nanobarns (nb), and femtobarns (fb).
About Roods
A rood (ro) is a traditional English unit of land area equal to one quarter of an acre, or 40 square rods, approximately 1,011.71 m². Originating in medieval England, the rood was used alongside the acre and the perch for describing land ownership. The name shares its root with 'rod,' the linear unit used to measure it. While largely obsolete in modern use, roods still appear in old English legal documents, historical land surveys, and certain rural property records in England and Wales.
Quick Reference Table
| Barns (b) | Roods (ro) |
|---|---|
| 1 b | 9.884 × 10-32 ro |
| 2 b | 1.977 × 10-31 ro |
| 5 b | 4.942 × 10-31 ro |
| 10 b | 9.884 × 10-31 ro |
| 25 b | 2.471 × 10-30 ro |
| 50 b | 4.942 × 10-30 ro |
| 100 b | 9.884 × 10-30 ro |