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fireworks |
Also found in: Wikipedia, Hutchinson | 0.01 sec. |
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fireworks: see pyrotechnics pyrotechnics (pī'rōtĕk`nĭks, pī'rə–), technology of making and using fireworks. ..... Click the link for more information. . fireworksExplosives or combustibles used for display. Of ancient Chinese origin, fireworks evidently developed out of military rockets and explosive missiles and accompanied the spread of military explosives westward to Europe in the Middle Ages. In force-and-spark compositions, potassium nitrate, sulfur, and ground charcoal are used; additional ingredients produce various types of sparks. In flame compositions, such as the stars that shoot out of rockets, potassium nitrate, salts of antimony, and sulfur may be used; for coloured fire, potassium chlorate or perchlorate is combined with a metal salt that determines the colour. Rockets are lifted by recoil from the jet of fire thrown out by the burning composition. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Everything from small flashers to Roman candles and mines was lighted at Fire Station 129 in Lancaster last week during training on what inspectors should look for, the distance crowds should be from various firework displays and other rules and safety procedures for commercial outdoor fireworks shows. The content range in Energy's library is exhaustive, including everything from clouds rushing over farmland to firework displays over the Statue of Liberty. Set in a Mexican village, the story bursts with excitement and energy as Pepito and Amelia help their family prepare a spectacular firework display for the birthday celebration of the town's patron saint. |
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