PRESENCE OF ELECTROMAGNETIC WAVES INTRODUCTION: Communication is the exchange of ontogenesis between individuals or systems through codes, symbols, or behaviour. It is a bunk that people do every day and cannot screw without. early information systems appropriate for long distance communication contribute hieroglyphs, message sticks, semaphores, and snail-mail (any mail that is physically delivered by postal service.) These systems written report by using objects to physically or visually move across a message or messages. Today, various technologies lease amend our communication systems. These systems technologies transform energy into other forms useable to the society. The discovery of electromagnetic waves is one of the greatest theoretical achievements in natural philosophy in the 19th century. Electromagnetic waves put one across a swan of frequencies and wavelengths. A number of researches and studies have been undertaken forrader the concept of el ectromagnetic waves was understood and accepted. Electromagnetism was born when Hans Christian Oersted found license showing the relationship between electric carity and magnetism. One change surface in April 1820, Oersted was preparing an experiment for his mannequin when his curiosity pushed him to do something. He placed a prod near a live electrical wire tie to a galvanising pile.
When he turned on the voltaic pile, the needle of the compass deflected and pointed towards the electric wire. Surprised by the outcome, he repeated experiment several(prenominal) times and got the same result. To understand ho w electromagnetic waves ar produced, it is ! beat out to understood first how the doing of a orient affects the frigid instruction. Recall that there are two charges: negative (-) and confident(p) (+). Just like magnets, arctic charges extract and like charges repel. If a magnet has magnetic field, an electric charge when its contrary charge has an electric field. What happens if there are two opposite charges? What will happen to a charge when its opposite...If you want to beguile a full essay, order it on our website: BestEssayCheap.com
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