weapon课件.ppt

The weapon 2500 years ago Chinese renowned strategist Sun Wu said a famous word “War is a question of vital importance to the state, a matter of life and death, the road to survival or ruin.” With the development of war, more and more advanced weapons are invented. ( BC535—? ) We dont know when does the weapon appear. At the beginning our ancestors used metal to forge some things as weapons. For example, like rimmer knife , lance (长矛） and hatchet （斧头） . rimmer knife lance hatchet However , all of metal weapons such as rimmer knife , lance ,hatchet and so on be called cold weapon . They just rely on peoples power to damage . Although this damage can be fatal , They still considered to be kinder than the weapons are invented at present . In 1871, germany people Mauser invented the real meaning gun - mauser .This invention changed the way of the war . It makes war into the hot-weapon age and the efficiency of killing becoming even higher . mauser gun Now the power of weapon have become so formidable and make the man can not to imagine. In particular, the emergence of the atomic bomb is challenging the limits of people’s cognition about weapon. Some people say that nuclear weapons are the most foolish invention in human history. A 1000 kg weight of the little things can easily destroy a big city and kill all the people inside . Hiroshima（广岛） and Nagasaki （长崎）demonstrated the power of them. Further, the carrier of human-launched nuclear weapons are increasingly sophisticated. From the ground to the sky and then to the sea, the types of carrier have become more and more. In the sky, people use bombers to launch