Page 98 - (DK) Danger! Open with Extreme Caution!
P. 98

An explosive is a substance packed with stored





        Recipe for disaster
                        th
                                                         making them useful as propellants (such as to
        Sometime in the 9  century,
        the Chinese found the recipe                         KABOOOOOM!
        for gunpowder. They mixed                  energy that is released as a sudden blast of
        fuel (carbon-rich charcoal)                  expanding gas, bright light, and searing heat.
                                                             expand in an instant, creating a destructive
        with a stabilizer (sulfur) to                 There are two basic types of explosives: low
        keep things under control
                                                              shock wave. Enjoy this mind-blowing trip
        and an oxidizer (nitrate)                       explosives like gunpowder expand slowly,
                                                                through the archives of explosive history.
        to feed the chemical reaction.
        When ignited, it went boom!                        fire a bullet from a gun), while high explosives




















                                                  The charcoal for gunpowder making came from burned trees, the sulfur from
                                                  underground mines… but collecting the final ingredient, potassium nitrate,
                                                   was a stinker of a job: old animal droppings were left to turn white, and then
                                                    the crystals of nitrate were rinsed off. Gunpowder may initially have been
                                                    used as an early insect repellent to smoke out invading ants, but, before
                                                 Blasted ants!









      98                                             long, its potential as a weapon was being fully exploited.
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