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Fireworks
(889 words)
1. Concept Fireworks are explosive devices ignited as an event to create effects of light, noise, and movement in connection with festivities. Pyrotechnic devices containing the explosives may be freely moving or fixed. The pyrotechnic effects vary according to the chemical composition of the device.Christian Quaeitzsch 2. History Simple pyrotechnic effects were known in ancient China and India. The art of manufacturing gunpowder and rockets probably reached Europe via Arabia, where it is attested since the 9th century [7]. The first information on the peaceful use…
Date:
2019-10-14
