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Updated: May 8, 2025
Now, it was Clio Marsden's life. "Stand up!" he snapped. "Hang onto this brace and keep your face in this air-stream until I get a suit around you! Got me?" She nodded weakly, and, assured that she could now hold herself at the valve, it was the work of only a minute to encase her in one of the protective coverings.
It might well be simple enough to store them separately, and the air-stream blowing past him would carry the gas behind him, permitting him to lay a stream of it in front of the big plane. Is that about it?" "That was about what I had figured. One of the things I want to do when I go with that Invalid Special tomorrow is to get some samples for analysis."
Gusts of abnormal strength, sweeping up as they do invisibly, may threaten to overturn a machine and dash it to earth. Eddies are formed between layers of warm and cold air. There are, as a craft flies, constant increases or lessenings of pressure in the air-stream that is sweeping under and over its wings; and all these fluctuations influence its equilibrium.
In an ascent in an east wind from the Crystal Palace in early July it was found that the upper limit of that wind was reached at 2,400 feet, at which level an air-stream from the north was encountered; but at 3,000 feet higher the wind again changed to a current from the N.N.W. At the height, then, of little more than half a mile, these upper currents were travelling leisurely; but what was more noteworthy was their humidity, which greatly increased with altitude, and a fact which may often be noted here obtruded itself, namely, when the aeronauts were at the upperlimits of the east wind, flat-bottomed cumulus clouds were floating at their level.
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