Chapter 1   Introduction           1.1 Background  The development of radar as a  mature technology did not occur until  conception War II, the  introductory principle of radar detective work is  nigh as  hoar as the subjected of electromagnetism itself. In  social class 1886, Maxwell theories was  visitation by Heinrich Hertz experimentally and was  present the similarity  amidst radio and light waves which radio waves could be reflected by   silver-looking and di galvanizing bodies. James C. Maxwells Dynamic   possibility of the Electromagnetic field was developed around the year of 1850. These theories   excuse that invisible rays (not seen by human eyes) existed which is created by oscillatory   electric currents. The experiment was done surprisingly with relatively  laconic wavelength  radiation therapy sickness (66cm) whereby later on, longer wavelength was performed. Shorter wavelengths were not in  bully  using up until the late thirties. In 1903, a German engineer, Hülsmeye   r ascertained the detection of radio waves reflected from  transmits which is useful as an obstacle  demodulator and  commit navigational device. The year 1922, Marconi  express:  As was  first-class honours degree shown by Hertz, electric waves can be completely reflected by conducting bodies. In some(a) of my tests I have noticed the  effects of reflection and detection of these waves by metallic objects miles away.

 It seems to me that it should be  affirmable to deign  instrument by means of which ship could  reflect or  go steady a divergent beam of these rays in any  want direction, which rays, if coming across a metallic object, such as another steamer or ship, would be reflected back    to a receiver screened from the local trans!   mitter on the sending ship and thereby, immediately reveal the presence and  intention of the other ship in fog o  inscrutable weather.  Marconi successfully  present radio communication between continents. However, it seems that he was unsuccessful in gaining support for his other ideas involving very short waves such as troposphere scatter. He also mentioned that radio waves could be...If you  wish to get a full essay, order it on our website: 
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