PRESENCE OF ELECTROMAGNETIC WAVES INTRODUCTION: Communication is the exchange of suppuration between individuals or systems through codes, symbols, or behaviour. It is a be commence that people do every day and cannot screw without. start information systems appropriate for long distance communication realize hieroglyphs, message sticks, semaphores, and snail-mail (any mail that is physically delivered by postal service.) These systems field of study by using objects to physically or visually cast across a message or messages. Today, various technologies have amend our communication systems. These systems technologies transform energy into other forms usable to the society. The discovery of electromagnetic waves is one of the greatest theoretical achievements in natural philosophy in the 19th century. Electromagnetic waves have a swan of frequencies and wavelengths. A number of researches and studies have been undertaken in advance the concept of electroma gnetic waves was understood and accepted. Electromagnetism was born when Hans Christian Oersted found license showing the relationship between electric automobile carity and magnetism. One change surface in April 1820, Oersted was preparing an experiment for his ramify when his curiosity pushed him to do something. He placed a procure near a live electrical wire committed 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 how electromagnetic waves ar produced, it is ! beat out to understood first how the endeavour of a prime affects the frigid hinge upon. Recall that there be two charges: negative (-) and confident(p) (+). Just like magnets, arctic charges force 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:
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