what essential contruction design is needed to recieve an incomming horizontal EM wave if the reciever...

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Physics

what essential contruction design is needed to recieve anincomming horizontal EM wave if the reciever is built forinterpreting changes in the electric field? what if it was built torecieve the magnetic field?

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Suppose youre the boss of a radio station and you want totransmit your programs to the wider world How do you go about itYou use microphones to capture the sounds of peoples voices andturn them into electrical energy You take that electricity andloosely speaking make it flow along a tall metal antenna boostingit in power many times so it will travel just as far as you needinto the world As the electrons tiny particles inside atoms inthe electric current wiggle back and forth along the antenna theycreate invisible electromagnetic radiation in the form of radiowaves These waves partly electric and partly magnetic travel outat the speed of light taking your radio program with them Whathappens when I turn on my radio in my home a few miles away Theradio waves you sent flow through the metal antenna and causeelectrons to wiggle back and forth That generates an electriccurrenta signal that the electronic components inside my radioturn back into sound I can hearArtwork How a transmitter sends radio waves to a receiver 1Electricity flowing into the transmitter antenna makes electronsvibrate up and down it producing radio waves 2 The radio wavestravel through the air at the speed of light 3 When the wavesarrive at the receiver antenna they make electrons vibrate insideit This produces an electric current that recreates the originalsignalTransmitter and receiver antennas are often very similar indesign For example if youre using something like a satellitephone that can send and receive a videotelephone call to any otherplace on Earth using space satellites the signals you transmit andreceive all pass through a single satellite disha special kind ofantenna shaped like a bowl and technically known as aparabolic reflector because the dish curves inthe shape of a graph called a parabola Often thoughtransmitters and receivers look very different TV or radiobroadcasting antennas are huge masts sometimes stretching hundredsof metersfeet into the air because they have to send powerfulsignals over long distances One of the ones I tune intoregularly at Sutton Coldfield in England has a mast 2705 metresor 887ft high which is something like 150 tall people standing ontop of one another But you dont need anything that big on yourTV or radio at home a much smaller antenna will do the jobfineWaves dont always zap through the air from transmitter toreceiver Depending on what kinds frequencies of waves we want tosend how far we want to send them and when we want to do itthere are actually three different ways in which the wavescan travelArtwork How a wave travels from a transmitter to a receiver 1By line of sight 2 By ground wave 3 Via the ionosphereAs weve already seen they can shoot by whats called line ofsight in a straight linejust like a beam of light Inoldfashioned longdistance telephone networks microwaves wereused to carry calls this way between very high communicationstowers fiberoptic cables have largely made this See Answer

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