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    "source_key": "britannica_1911",
    "source_title": "Encyclopaedia Britannica (1911)",
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    "chunk_id": "1911:beaufort scale:a358a3936527",
    "title": "BEAUFORT SCALE",
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    "verified_text": "beaufort scale, a series of numbers from 0 to 12 arranged by admiral sir francis beaufort (1774-1857) in 1805, to indicate the strength of the wind from a calm, force 0, to a hurricane, force 12, with sailing directions such as \"5, smacks shorten sails\" for coast purposes, and \"royals, &c., 'full and by'\" for the open sea. an exhaustive report was made in 1906 by the meteorological office on the relation between the estimates of wind-force according to beaufort's scale and the velocities recorded by anemometers belonging to the office, from which the following table is taken:-- +---------------+--------------------+------------------+ | | | limits of hourly | |beaufort scale.| corresponding wind.| velocity. | +---------------+--------------------+------------------+ | numbers. | | miles per hour. | | 0 | calm | under 2 | | 1-3 | light breeze | 2-12 | | 4-5 | moderate wind | 13-23 | | 6-7 | strong wind | 24-37 | | 8-9 | gale | 38-55 | | 10-11 | storm | 56-75 | | 12 | hurricane |above 75 | +---------------+--------------------+------------------+",
    "source_url": "https://archive.org/details/EB1911WMF",
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