Beaufort

The Beaufort scale is a way to measure wind strength without using instruments, based on observable effects on the environment, primarily on the sea and land. Developed in the early 19th century, it ranges from 0 (calm) to 12 (hurricane). For example, at low levels, gentle breezes sway small branches, while very strong winds cause large waves and difficulty in walking against the wind. It helps sailors, meteorologists, and outdoor enthusiasts understand wind conditions visually, providing a practical reference to gauge wind intensity without needing precise measurements.