"Balloons, Airships, and Flying Machines" by Gertrude Bacon. Published by Good Press. Good Press publishes a wide range of titles that encompasses every genre. From well-known classics & literary fiction and non-fiction to forgotten−or yet undiscovered gems−of world literature, we issue the books that need to be read. Each Good Press edition has been meticulously edited and formatted to boost readability for all e-readers and devices. Our goal is to produce eBooks that are user-friendly and accessible to everyone in a high-quality digital format.
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Gertrude Bacon. Balloons, Airships, and Flying Machines
Balloons, Airships, and Flying Machines
Table of Contents
CHAPTER I. THE ORIGIN OF BALLOONING
CHAPTER II. THE COMING OF THE GAS BALLOON
CHAPTER III. FAMOUS BALLOON VOYAGES OF THE PAST
CHAPTER IV. THE BALLOON AS A SCIENTIFIC INSTRUMENT
CHAPTER V. THE BALLOON IN WARFARE
CHAPTER VI. THE AIRSHIP
CHAPTER VII. THE FLYING MACHINE
CHAPTER VIII. CONCLUSION
Отрывок из книги
Gertrude Bacon
Published by Good Press, 2021
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And so for some time the Montgolfiers and their followers supposed that the presence of this mysterious gas was necessary to the success of their experiments, and they were very careful about always using special kinds of fuel, which they supposed gave off this gas, to inflate their bags. Later experiments proved, however, what every one now knows, that the paper-bag rose, not because of the gases given off by the fire, but by reason of the hot air with which it became filled. Nearly all substances, no matter how solid, expand more or less under the influence of heat, and air expands very greatly indeed. By thus expanding heated air becomes lighter than the surrounding air, and, because it is lighter, rises upwards in the atmosphere, and continues to rise until it has once more regained the average temperature.
