Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 35
atura-tion being 100 percent. For example, areading of 65 per centmeans that there is65 per cent as muchwater vapor in the airas it would hold ifsaturated. By knowing theweight of vapor re-quired at a certaintemperature to satu-rate the air, with the hygrometer reading it is easy to com-pute the… … Figure 14. — The Hygrometer. SXOW AND HAIL 25 26. Dew. — If warm air comes in contact with a coldobject it may be cooled below the saturation point and someof its water vapor may condense and appear as drops onthe cold object. These drops are called dew. You haveall seen a pitcher of ice water…
Physics
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