 ... 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 - الصفحة 8بواسطة Robert Mudie - 1835 - عدد الصفحات: 280عرض كامل - لمحة عن هذا الكتاب
 | 1835 - عدد الصفحات: 642
...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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