scale for wind speed. It begins at 0 and concludes at 12. surf are located to detect speed. Its named after Sir Francis Beaufort.
determine wind velocity, developed 1806 by Francis Beaufort (1774-1857), surveyor and hydrologist.
Empirical scale for estimating wind-speed, including 0 (calm) to 12 (hurricane), by watching the wind's impact on waves and presence. Developed because of the British admiral Sir Francis Beaufort (1774-1857) originally for wind-over-sea, it offers a corresponding scale for wind-over-land.
a global scale of wind force from 0 (peaceful air) to 12 (hurricane)
- a scale from 0 to 12 for power associated with wind