Examples of toy fireworks on the market

As shown in above table, many toy fireworks are accentuated by a noise, D, because this is most effective but their prices are generally higher than the others. In this case,however,there are safety problems in manufacture due to the use of the red explosive. The weight of composition per volume is generally less than 0.2 g per cc This is important in the safe handling of toy fireworks. 

Here the word Principle refers to practice which has come through experience and to which most people would have to consent. When handling explosives we can avoid accidents if we observe these doctrines, but knowledge is different from practice. It takes many years for a person to master these doctrines. 

Conservation. The first point is Be careful This is obvious, but in practice great care is needed and however much experience and knowledge has been gathered, it falls short of perfection. The point really is that even if we are ignorant of the circumstances, we can maintain safety by following this doctrine. For example, at a level crossing the traffic signalboard orders us to Stop , and everyone must immediately stop and walk carefully. It is the same with fireworks. Don t warm compositions is an obvious order, and so the operation must be stopped at once. The next order would be Do it below 60°C, when it is necessary . Thus, the double approach of both prohibition and relief is the specific character of the doctrine of conservation. 

Maintenance. This requires the maintenance of the same conditions over a period of time. If it was safe yesterday and all the conditions are maintained from yesterday to today, then safety will be maintained. 

On the contrary, if an accident has occurred the conditions must have changed. 

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Examples of toy fireworks on the market are shown in Table 25-Table 25- Examples of toyfireworks on the market... 

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