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Word Count: 866
The first practical application of electricity was the telegraph invented by Samuel FB Morse in 1837 The need for engineering was not in demand The need for electrical engineers was not felt until some 40 years later upon the invention of the telephone 1876 by Alexander Graham Bell and of the incandescent lamp 1878 by Thomas A Edison These devices and Edisons first central generating plant in New York City 1882 created a large demand for men trained to work with electricity The discovery of the Edison effect a flow of current through the vacuum of one of his lamps was the first observation of current in space Hendrick Antoon Lorentz of The Netherlands predicted the electron theory of electrical charge in 1895 and in 1897 JJ Thomson of England showed that the Edison effect current was indeed caused by negatively charged particles electrons This led to the work of Guglielmo Marconi of Italy Lee De Forest of the United States and many others which laid the foundations of radio engineering In 1930 the term electronics was introduced to embrace radio and the industrial applications of electron tubes Since 1947 when the transistor was invented by John Bardeen William H Brattain and William B Shockley electronics engineering has been dominated by the applications of such solid-state electronic devices as the transistor the semiconductor diode and the integrated circuit the branch of engineering concerned with the practical applications of electricity in all its forms including those of the field of electronics Electronics engineering is that branch of electrical engineering concerned with the uses of the electromagnetic spectrum and with the application of such electronic devices as integrated circuits transistors and vacuum tubes In engineering practice the distinction between electrical engineering and electronics is based on the comparative strength of the electric currents used In this sense electrical engineering is the branch dealing with heavy currentthat is electric light and power systems and apparatuseswhereas electronics
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