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Scientific famous ● Science is systematized knowledge (He Spencer) ● Science is the spirit of people become brave the best way to (Bruno) ● Science is the generals, the practice of soldiers (Leonardo da Vinci) ●Scientific farming, the more kinds of more sweet Scientific famous The great forces of science and technology ●not get science and technology, productivity cannot raise ( Mao Zedong ) ●Science and technology is the first productivity ( Deng Xiaoping ) ●science should be advocated, for it is the hope of development . ( DengXiaoping ) Life of electrical origin ( washing machine ) In 1858, the Americans called Hamilton Smith in Pittsburgh made the world's first washing machine. The main parts of the washing machine is a drum barrel fitted with a straight shaft with paddle-shaped leaves. Axis is rotated by shaking, and it is connected to a crank. The same year Smith made washing machine patents. But the washing machine using laborious and damage the clothes, and thus is not widely used, but this marks the beginning of the washing machines. In Germany the following year the One with Daoyi pestle as agitator washing machine, when Daoyi pestle up and down movement, the spring-loaded dowel continuous acting on clothes. The washing machine of the late 19th century has been developed into a laundry tub octagonal handle rotation, cylinder laundry into the hot soapy water, clothes washed, clothes wringer mangle device. In 1, Tsien Hsueshen ( a famous scientist, physicist. China's modern mechanics and one of the founders of. In aerodynamics, propulsion, aerospace engineering, control engineering, physics and mechanics etc fields of science technology has made many contributions. ) In 2, Qian Sanqiang ( nuclear physicist, academician of the Chinese Academy of Sciences, in " fission " of outstanding achievements, many interdisciplinary and crossing subject advocates. China Atomic Energy Science Creation and "bombs " studies make an important contribution to Zhu Kezhen ( 3 ), geographer, meteorologist, Chinese modern meteorology and geography master, is the our country the study of phenology founder, promoters ) 4, Li Siguang (paleontologist, stratigraphers, tectonic experts, Quaternary glacier experts. Chinese geological mechanics author. " " fossil new classification standard, put forward the Sinian in South China and north of Carboniferous system, East China Quaternary glaciation of the discovery and study of geological science is his major contribution. ) In 5, Yuan Longping ( agronomist, hybrid rice breeding expert, founder of China's hybrid rice research, the world's successful use of hybrid rice advantage of the first. In 1981 he won China's first principal national invention award, is recognized internationally as the " father of hybrid rice ". The story of scientists Edisononly three months of primary school, he relied on his mother's education and self-study. His success, should be attributed to the mother for his understanding and patience to teach, to the original being considered a moron Edison, grew up to become the " king of the invention be known to all the world ". Edison grew up on a lot of things out of curiosity, but also likes to go to trial, to understand the reason. After growing up, according to his own interest in this regard, undivided attention the work of research and invention. In New Jersey he has set up a laboratory, lifetime comorbid invented the electric light bulb, the telegraph, the gramophone, film, magnetic analysis of mill, crusher, totaling more than two kinds of things. Edison's strong spirit of research, to improve his human life style, made a significant contribution. " The biggest waste, waste is a waste of time. " Edison Ever said to his assistant. " Life is too short, much way, with very little time to do more things. " One day, Edison in the laboratory work, he gave an assistant Shangdeng I did not empty glass bulb, said: " you measure the capacity of the bulb. " He went down to work. After a long, he asked: " how much capacity? " he heard no answer, turned to see assistant with a ruler in the light of the circumference measurement, angle, and took the measured digital volt on the table calculation. He said: " time, time, how so much time? " Edison came, took the air bulb, has filled the water to inside, gives the assistant, said: "the inside water poured into the cup, now tell me its capacity. " Assistant immediately read out the digital. Edison said: " this is how easy measurement method, it is accurate, and save time, what do you think? Also calculated, that white qibushibai a waste of time? " The assistant blushed. Edison murmured: " life is too short, too short, to save time, do more things ah! " Edison is not known before the poor workers. Once, his old friends met him on the street, the concern said: " see you on this coat is worn very unbecoming, you should replace it with a new one. " " Need it? Nobody knows me here in New York. " Edison did not care to answer. Over the years, ed a big inventor. One day, Edison and in the streets of New York met the friend. " Oh, " exclaimed friend, " how do you break even wearing this coat? This time, in any case you want to change for a new one! " " useful? Here is everybody know me. " Edison is still not care to answer This is the beginning of the washing machine, the washing machine has become indispensable to life and with each passing day. The second day ten class Chen shouzhong 本文来源：https://www.wddqw.com/doc/376fb82eccbff121dd3683d6.html