Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 88
ecreases the buoyancy. QUESTIONS 1. Why should the gas-bag be subject to an increased strain from thepressure of the gas within as the balloon ascends ? 2. Aeronauts report that balloons have greater buoyancy during theday when the sun is shining upon them than at night when it is cold.Account for… … Applications of the Laws of Gases 84. Air-Pump. Tlie ordinary air-pump, used for removingthe air from a vessel, is illustrated in Fig. 93. It depends onthe fact that a gas is always trying to expand, and whenpermitted spreads into all available space. The caction of the pump is as follows :—When…
Physics
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