calm

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calm

Meteorol of force 0 on the Beaufort scale; without wind

Calm

 

a condition of little or no wind. On the Beaufort scale, wind velocity during a calm is 0–0.2 m/sec. Calms are usually observed within stable anticyclones, in cols, and in the intertropical convergence zone. Calms occur more often in valleys and basins than in open areas with free circulation of air. There is little turbulence during a calm, and therefore harmful atmospheric aerosols (smoke and gas) may accumulate in the lowest atmospheric layer.

calm

[käm]
(meteorology)
The absence of apparent motion of the air; in the Beaufort wind scale, smoke is observed to rise vertically, or the surface of the sea is smooth and mirrorlike; in U.S. weather observing practice, the wind has a speed under 1 mile per hour or 1 knot (1.6 kilometers per hour).

calm

The absence of wind or an apparent lack of motion of the air. It is depicted on synoptic charts as image.
References in classic literature ?
That evening calm betrayed alike the tinkle of the nearest streams, the sough of the most remote.
I asked you," continued Villefort, in a perfectly calm tone, "where you conceal the poison by the aid of which you have killed my father-in-law, M.
His face, a little elongated, had gained in calm dignity what it had lost in feverish excitement.
At length that calm despair which occurs only in a strong and somewhat stubborn character, and yields to no second spring of hope, settled down on the spirit of Adam Colburn.
The way she kept turning her head to look around her, the quick coming and going of the colour of her face, her hurried breathing, alternating with periods of suspicious calm, were evidences of mental perturbation.
That pale face, so calm and worn; those hands, once so skillful, lying nerveless by his side; those limbs stiffened by the icy grasp of death; nothing there betokened a sleep that was disturbed by dreams.
Morley has dwelt strongly on the circumstance of Wordsworth's remarkable personal happiness, as having had much to do with the physiognomy of his poetic creation--a calm, irresistible, well-being--almost mystic in character, and yet doubtless [93] connected with physical conditions.
A SHEPHERD, keeping watch over his sheep near the shore, saw the Sea very calm and smooth, and longed to make a voyage with a view to commerce.
So as not to wake me," replied the Writer of Fables, a holy calm brooding upon his beautiful face.
This side is peaceful and calm, seeing there's so few men.
You may see from a boat, in calm weather, near the sandy eastern shore, where the water is eight or ten feet deep, and also in some other parts of the pond, some circular heaps half a dozen feet in diameter by a foot in height, consisting of small stones less than a hen's egg in size, where all around is bare sand.
For certainly old age has a great sense of calm and freedom; when the passions relax their hold, then, as Sophocles says, we are freed from the grasp not of one mad master only, but of many.