The Borderland of Science a Series of Familiar Dissertations On Stars Planets
The Borderland of Science a Series of Familiar Dissertations On Stars Planets
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In our eReader you can find the full English version of the book. Read The Borderland of Science a Series of Familiar Dissertations On Stars Planets Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Borderland of Science a Series of Familiar Dissertations On Stars Planets
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A power which could propel the car of a balloon through calm air at the rate of twenty miles an hour, would cause precisely the same effect on the balloon itself, as though the car were fixed, while a heavy wind was blowing 326 THE BORDERLAND OF SCIENCE.
against the balloon. We know what the effect would be in this latter case ; the balloon would soon be made a complete wreck : and nothing else could happen in the former case.
But it may be seriously questioned, whether buoy- ancy is a desirabl...e feature in any form of flying- machine. We have seen that a degree of buoyancy sufficient to secure actual floatation in the air is in- compatible with aerial navigation. We may now go further, and urge that even a less degree of buoyancy would be a mischievous feature in a flying- machine. M. Nadar, the balloonist, makes a significant, though not strictly accurate observation on this point, in his little book on flying. Passing through the streets of Paris, during the sedileship of Haussmann, he heard a workman call from the roof of a house to a fellow- workman below, to throw a sponge up.
What to read after The Borderland of Science a Series of Familiar Dissertations On Stars Planets?
You can find similar books in the "Read Also" column, or choose other free books by Richard a Richard Anthony Proctor to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
A power which could propel the car of a balloon through calm air at the rate of twenty miles an hour, would cause precisely the same effect on the balloon itself, as though the car were fixed, while a heavy wind was blowing 326 THE BORDERLAND OF SCIENCE.
against the balloon. We know what the effect would be in this latter case ; the balloon would soon be made a complete wreck : and nothing else could happen in the former case.
But it may be seriously questioned, whether buoy- ancy is a desirabl...e feature in any form of flying- machine. We have seen that a degree of buoyancy sufficient to secure actual floatation in the air is in- compatible with aerial navigation. We may now go further, and urge that even a less degree of buoyancy would be a mischievous feature in a flying- machine. M. Nadar, the balloonist, makes a significant, though not strictly accurate observation on this point, in his little book on flying. Passing through the streets of Paris, during the sedileship of Haussmann, he heard a workman call from the roof of a house to a fellow- workman below, to throw a sponge up.
What to read after The Borderland of Science a Series of Familiar Dissertations On Stars Planets?
You can find similar books in the "Read Also" column, or choose other free books by Richard a Richard Anthony Proctor to read onlineMoreLess
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