Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
ntly in nearly the same direction, as the trade-winds (262). 2. Variable winds are those which blow sometimes in one and some-times in another direction. 3. Periodical winds are those which blow regularly in the samedirection at the same seasons of the year or hours of the day, as theland and sea… … ascends and passes, in the upper atmospheric regions, over toward thepoles, and a current of cold air sets in, in the lower atmospheric re-gions, from the north and south, to take the place of the rising cur-rent ; as illustrated by the arrows. HEAT. IGl These currents, toward the poles above and…
Physics · Astronomy
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