Word: rotch
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Professor A. Lawrence Rotch h.'91, of the department of Geology, delivered a lecture on "The Route of the Air" in the Union yesterday evening, giving a general discussion of aerial navigation...
Professor Rotch stated that the theory of aero dynamics was important enough to attract the attention of the colleges, and that courses in the subject should be established. Several colleges already have courses in the study of the air and the machines used in its navigation. The time will soon come when all universities will have similar courses...
Professor Rotch then pointed out the difference between ocean navigation and air navigation, and the difficulties encountered in the latter. The aeroplane and the balloon can make no headway against a wind unless their velocity is greater...
...aviator has a vast number of varying air currents to contend with, and he must therefore be acquainted with relative velocities and varying conditions of winds. To illustrate these conditions Professor Rotch showed charts on the screen of wind velocity and pressure at low and high altitudes. The pressure and velocity increase rapidly as the altitude increases. Charts were also shown of the prevalent winds. West winds are prevalent at high altitudes and in the winter. North of the equator the trade winds are northeasterly and south of the equator they are southeasterly. If the aviator or balloonist followed...
...Lecture on "The Route of the Air," by Professor A. L. Rotch, in the Living Room of Union...