Evening Republican, Volume 21, Number 181, Rensselaer, Jasper County, 10 August 1918 — Atmospheric Pressure. [ARTICLE]

Atmospheric Pressure.

“When a high altitude, say 17,000 feet, has been reached,” says L. J. Wilson, airplane expert, writing in a Southern newspaper, “there is an atmospheric pressure equal to about one-naif that rit sea level. The effect of this lessening of pressure is noticeable to one who for the first time experiences it. At about feet there were physical Sensations at once experienced .by the writer, that of increased blood pressure and the exertion following exercise being the most apparent The altitude, whether attained in mountain climbing or by airplane, to a certain extent produces the same effect upon the organism, the amount differing with various individuals.” •