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Books Books 1 - 10 of 10 on It is manifest that if the air at the surface of the earth should at any time be....
" It is manifest that if the air at the surface of the earth should at any time be cooled down a little below the dew point, it would form a fog by condensing a small portion of its transparent vapor into little fine particles of water, and if it... "
The Philosophy of Domestic Economy: As Exemplified in the Mode of Warming ... - Page 34
by Charles Sylvester - 1819 - 62 pages
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The Philosophy of Storms

James Pollard Espy - Storms - 1841 - 552 pages
...is variable accordingly as there is more or less vapor in the air, is called the " dew point," and the difference between the dew point and the temperature of the air in degrees, is called the complement of the dew point.1 (117,118,129.) It is manifest, that if the...
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Gawthrop's journal of literature, science, and arts

...is variable accordingly as there is more or less vapour in the air, is called the " dew-point," and the difference between the dew point and the temperature of the air in degrees is called the complement of the dew-point.* It is manifest, that if the air at the surface...
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the edinburgh medical and surgical

\ - 1848
...much relied on. In all the trials which were made during the winter of 1846—47, they showed that the difference between the dew point and the temperature of the air was generally at least 4 or 5 degrees, and in many cases more; thus indicating that the air was not...
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The American Journal of Science and Arts

1849
...that the dew will begin to fall at sundown, and it appears from observation, that at Philadelphia, the difference between the dew point and the temperature of the air, at 4 p. M., is, on the average, about equal to the entire average nocturnal loss of temperature, and...
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The Dynamical Theory of the Formation of the Earth, Volume 2

Archibald Tucker Ritchie - Cosmogony - 1850
...depending on the number of degrees which the dew point is below the temperature of the air ; .... and the difference between the dew point and the temperature of the air is called the complement of the dew point."f • Principles of Meteorology, Hutchinson, pp. 17, 21,...
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Elements of Chemistry: Including a Copious Selection of Experiments, and ...

Alexander Fisher Olmsted - Chemistry - 1851 - 335 pages
...stand indicates the temperature of the air. The comparison of these two thermometers, therefore, gives the difference between the dew point and the temperature of the air. 38. Water may be frozen in the vacuum of an air pump, as well as in that produced by the condensation...
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The New England Farmer, Volume 14

Agriculture - 1862
...degrees. Then the air must be cooled to that extent to cause it to deposit moisture, or to rain. If the difference between the dew point and the temperature of the air is but a few degrees, there is a high probability that rain will soon fall. If the observations are...
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The American Cyclopaedia: A Popular Dictionary of General Knowledge, Volume 6

George Ripley, Charles Anderson Dana - Encyclopedias and dictionaries - 1874
...observations made each day at the Cooper institute, for the Smithsonian institution, by Prof. Morris: The difference between the dew point and the temperature of the air is called the complement of the dew point. From numerous observations which have been made with Daniell's...
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A Text-book on the Elements of Physics: For High Schools and Academics

Alfred Payson Gage - Physics - 1882 - 414 pages
...according to its location, dew, fog, or cloud. The atmosphere is said to be dry or humid, according as the difference between the dew point and the temperature of the atmosphere is great or little. QUESTIONS. 1. Why does our breath produce a cloud in winter and not...
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"The Weather": A Practical Guide to Its Changes Showing Signal Service ...

S. S. Bassler - Weather - 1883 - 54 pages
...The height to which the air must ascend before it will become cold enough to form cloud, depends upon the difference between the dew point and the temperature of the air. If the dew point be ten degrees below the temperature of the air, cloud will begin to form when the...
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