Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 59
volume as it ascends by simply inflating to a greaterextent. Thus, a balloon which ascends until the pressure is but 7 centi-meters of mercury should be only about one fourth inflated when it isat the surface. The parachute (Fig. 4G) is a huge, umbrella-like affair with whichthe aeronaut may… … Fig. 40. The parachute rt lU O r-J .~r-<
Physics
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