Arrangement of firework

Fig 2.5 Arrangement of fireworks on exhibiting desks (recollection of witnesses)... 

The shop was engaged in the business of operating game machines and a lunchroom, and in selling stationery, miscellaneous goods, and toy fireworks as seasonal items. The arrangement of goods in the shop was reported as illustrated in Fig.2.3. 

Fireworks are an aesthetic arrangement of various fire producing elements. People call these phenomena and often the articles which produce these phenomena "fireworks . The word pyrotechnics originated from Greek and is synonymous with fireworks , but it has a wider scope than fireworks" in that they are not only produced to be admired and enjoyed but they are also made for military and industrial use. 

Firework art is concerned with space and time by creating a contrast from one moment to the next moment, or between a place and another. The background of firework display is nature which is quite changeable and often disturbs the artistic effect of fireworks. Firework art is different from the pictorial art, i.e. there is no framework, and it can be appreciated from all quarters. The reason why the spherical and crown shaped fireworks have been highly developed, lies in the fact, that they lend themselves to such surroundings to produce an effectively artistic firework arrangement. 

Lance-vork is so popular that it readily comes to mind when we think of exhibition fireworks. The technique creates lines of fire by the linear arrangement of lances at short interrals. The technique is used to produce a portrait, a scene, letters etc. as it comes under the heading of illuminations. 

Why are some fireworks red, some white, and others blue The key to understanding the chemical behavior of fireworks, and all matter, lies in understanding how electrons are arranged in atoms of each element. 

This is a traditional type of firework which simultaneously produces many small flowers, many fire streams etc. in a short time, making a very colourful effect. The setting technique varies according to the particular effect required, but in general a group of mortars are arranged in a frame to simplify firing and transport(Fig.124). A loaded mortar is shown, e.g.. 

The modern fireworks industry can be represented by three books. George Washington Weingart s Pyrotechnics is a practitioner s manual full of useful details. It has recently been reprinted (1967). Some of the information on fireworks, both from Weingart and other sources, is found in Tenney Lombard Davis The Chemistry of Powder and Explosives, which is somewhat more accessible and also, notwithstanding its age, a mine of useful information on explosives. Izzo s book, written in Italian, is a rather condensed manual of fireworks, with emphasis on design of the more elaborate arrangements. 

The automation of firework production is something that has come only slowly. Paper caps are produced on automated machinery at a rate of 25 million a day, and machines are used to roll and label tubes, fill certain compositions, etc. The writer has not yet seen any machine that completely automates the production of any given firework and suspects that even if time and money were put into such a machine it could only be used for mixtures that were limited in sensitivity or simple in form. Filling machines and automatic presses are used in Europe, but friction occasionally causes explosions or fires. The machines are so arranged that they can be quickly cleaned and restarted. 

We have five kinds of sounds shooting and explosive sound, thunder report, whistle. and humming. When we arrange these sounds at proper time intervals, e.g. of 2 or seconds in the case of 6 inch shells, we can make the sounds into a rhythm to create firework music. In this case, the first three sounds play the role of percussion instruments. But to bring the five sounds into music, the time of ignition, delay, explosion and the period of the whistles and hummers must be accurately controlled.(See ). 

The larger Roman candles are fitted with plastic end-caps in the obvious interest of waterproofing, and the fuses are extended to include a piped match and a delay fuse. Display fireworks are often arranged as fans on a wooden framework or wrapped as bundles with an interconnecting fuse. 

---