 | Edward T W. Polehampton - 1815 - 688 pages
...iron filings, very clean and free from rust, and to mix them with the composi. tion of the rocket. Tt must however be observed, that rockets of this kind...Chinese have long been in possession of a method of ren« during this fire much more brilliant and variegated in its colours ; and we are indebted to father... | |
 | Edward Polehampton - 1815 - 710 pages
...necessary but to take iron filings, very clean and free from rust, and to mix them with the compos!. tion of the rocket. It must however be observed, that rockets...saltpetre rusts the iron-filings, and destroys the eflect they are intended to produce. But the Chinese have long been in possession of a method of ren.... | |
 | Edward T W. Polehampton - 1815 - 712 pages
...necessary but to take iron filings; very clean and free from rust, and to mix them with the composi. tion of the rocket. It must however be observed, that rockets...the moisture contracted by the saltpetre rusts the iron-Clings, and destroys the effect they are intended to produce. But the Chinese have long been in... | |
 | Ramses II (King of Egypt), Edward Upham - 1824 - 366 pages
...probable that Egypt, far surpassing these countries in knowledge, was not ignorant of this brilliant art. The Chinese have long been in possession of a method of rendering fire brilliant, and variegated in its colours, and we are indebted to Father D'Hancarville for the... | |
 | Thomas Curtis - Aeronautics - 1829 - 804 pages
...from dust, and to mix them with the ordinary composition. It must, however, be observed, that works of this kind will not keep longer than a week ; because...the moisture contracted by the saltpetre rusts the iron filings. The Chinese have long been in possession of a method of rendering this fire much more... | |
 | Frederick Augustus Griffiths - 1839 - 348 pages
...rust, and are to be thoroughly mixed with the rocket composition, which however will not afterwards keep longer than a week, because the moisture contracted by the saltpetre rusts the filings, and destroys the effect they are intended to produce. IRON SAND, FOR SOCKETS. Having broken... | |
 | Jacques Ozanam - 1840 - 850 pages
...discovered no doubt by chance, gave rise to the idea of rendering the fire of rockets much more hrilliant than when gunpowder, or the substances of which it...possession of a method of rendering this fire much more hrilliant and variegated in its colours ; and we are indebted to Father d-lncarville, a jesuit, for... | |
 | Joseph Needham - History - 1987 - 838 pages
...have the secret of giving to flame is the greatest mystery of their fireworks. 'c And so also Cutbush: 'The Chinese have long been in possession of a method of rendering fire brilliant, and variegated in its colours. 'f But then comes the important point, not generally... | |
| |
... of the rocket. It must however be observed, that rockets of this kind will not keep longer than a week ; because the moisture contracted by the saltpetre rusts the iron-filings, and destroys the effect they are intended to produce. But the Chinese... 