 ... stratum of air, however thin, then there is no more weight to be moved than the simple weight of the substance,—that is, the gravitation of the substance toward the earth is the only resistance to be overcome in removing that substance from the...  The Air - Page 8by Robert Mudie - 1835 - 280 pagesFull view - About this book
 | Books - 1835 - 642 pages
...subsequent inquiry; but we n»v mention, that if a substance is detached from the earth by means of > stratum of air, however thin, then there is no more...pavement or a firm footpath, he has no weight to lift hut that of his own body ; and if he has been taught to walk neatly, the height to which he requires... | |
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