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" It is evident there must be at least three rods, pierced in proportion to the diminution of the piercer, in order that the powder which is rammed in by means of a mallet, may be uniformly packed throughout the whole length of the rocket. It may be easily... "
Recreations in Mathematics and Natural Philosophy .. - Page 368
by Jacques Ozanam - 1814
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Gallery of Nature and Art, Or a Tour Through Creation and Science ..., Volume 6

Edward T W. Polehampton - 1815 - 688 pages
...must be made equal to a sixth of the calibre. It is evident that there must be at least three rods, pierced in proportion to the diminution of the piercer,...that these rods ought to be made of some very hard woo<), to resist the strokes of the mallet. In loading rockets, it is more convenient not to employ...
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Gallery of Nature and Art, Or a Tour Through Creation and Science ..., Volume 6

Edward T W. Polehampton - 1815 - 712 pages
...must be made equal to a sixth of the calibre, It is evident that there must be at least three rods, pierced in proportion to the diminution of the piercer,...throughout the whole length of the rocket. It may bo easily perceived also, that these rods ought to be made of some very hard wood, to resist the strokes...
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The Gallery of Nature and Art; Or, a Tour Through Creation and Science, Volume 6

Edward Polehampton - 1815 - 710 pages
...must be made equal to a sixth of the calibre. It is evident that there must be at least three rods, pierced in proportion to the diminution of the piercer, in order that the POw der which is rammed in by means of a mallet, may be uniformly packed throughout the whole length...
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A London Encyclopaedia, Or Universal Dictionary of Science, Art ..., Volume 18

Thomas Curtis - Aeronautics - 1829 - 804 pages
...point must be made equal to a sixth of the calibre. It is evident there must be at least three rods, pierced in proportion to the diminution of the piercer,...rockets it is more convenient not to employ a piercer. When loaded on a nipple, without a piercer, by means of one massy tod, they are pierced with a bit...
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Recreations in mathematics and natural philosophy, recomposed by m. Montucla ...

Jacques Ozanam - 1840 - 850 pages
...be made equal to a sixth of the calihre. It is evident that there must be at least three rods, such as c, pierced in proportion to the diminution of the...order that the powder which is rammed in by means of a mullet, may be uniformly packed throughout the whole length of the rocket. It may be easily perceived...
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