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Knowing the wind sampling average is important, as the value of a one-minute sustained wind is typically 14% greater than a ten-minute sustained wind. [16] A short burst of high speed wind is termed a wind gust ; one technical definition of a wind gust is: the maxima that exceed the lowest wind speed measured during a ten-minute time interval ...
Brontë's love of the sea is expressed in this poem. In it, the sea is portrayed as "The Great Liberator". [2]The line "the long withered grass in the sunshine is glancing" and the footnote she wrote at the bottom of the poem reveals that Brontë "loved wild weather, as she loved the sea, and hard country and snow". [3]
where v is the equivalent wind speed at 10 metres above the sea surface and B is Beaufort scale number. For example, B = 9.5 is related to 24.5 m/s which is equal to the lower limit of "10 Beaufort". Using this formula the highest winds in hurricanes would be 23 in the scale.
"The Wind" shows great inventiveness in its choice of metaphors and similes, while employing extreme metrical complexity. [9] It is one of the classic examples [10] [11] of the use of what has been called "a guessing game technique" [12] or "riddling", [13] a technique known in Welsh as dyfalu, comprising the stringing together of imaginative and hyperbolic similes and metaphors.
The poet becomes the wind's instrument, his "lyre" (57). This is a symbol of the poet's own passivity towards the wind; he becomes his musician and the wind's breath becomes his breath. The poet's attitude—towards the wind has changed: in the first canto the wind has been an "enchanter" (3), now the wind has become an "incantation" (65).
The term originally derives from the early fourteenth century sense of trade (in late Middle English) still often meaning "path" or "track". [2] The Portuguese recognized the importance of the trade winds (then the volta do mar, meaning in Portuguese "turn of the sea" but also "return from the sea") in navigation in both the north and south Atlantic Ocean as early as the 15th century. [3]
Turbine wind class is just one of the factors needing consideration during the complex process of planning a wind power plant. Wind classes determine which turbine is suitable for the normal wind conditions of a particular site. Turbine classes are determined by three parameters - the average wind speed, extreme 50-year gust, and turbulence. [12]
In the poem, the narrator admires the bird as it hovers in the air, suggesting that it controls the wind as a man may control a horse. The bird then suddenly swoops downwards and "rebuffed the big wind". The bird can be viewed as a metaphor for Christ or of divine epiphany. Hopkins called "The Windhover" "the best thing [he] ever wrote". [2]
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