close
    How can radio waves go around the world with energy to propell it

    +1  Views: 1659 Answers: 1 Posted: 9 years ago

    1 Answer

    Radio waves are created by a transmitter,  the transmitter creates the energy to 'push' the wave (RF signal) through a carrier - Within the carrier is modulation. (Music/Voice/data)  Similar to a garden hose.  Water pressure pushes the water through a hose.  Where the hose is the carrier, water is the signal modulation..


    An RF signal (Radio Frequency)  wave needs to also have a receiving station.  Your radio.  The receiving station must be tuned to the exact frequency as the transmitter.  


    The transmitter has a set 'wattage', watts is the pressure! The more pressure, the further the signal will go.


    This brings us to 'wavelength'.  The antenna of the transmitter must match the wavelength of the receiver.  Sometimes the actual wave is very large so the receiving antenna to be perfect  must be the same size, this is impossible in most applications so they cut the antenna to half, quarter or eighth wave.  


    Hope this helps.


     



    Top contributors in Physics category

     
    ROMOS
    Answers: 83 / Questions: 0
    Karma: 5790
     
    Benthere
    Answers: 7 / Questions: 0
    Karma: 3090
     
    jhharlan
    Answers: 39 / Questions: 0
    Karma: 2535
     
    Colleen
    Answers: 104 / Questions: 0
    Karma: 2475
    > Top contributors chart

    Unanswered Questions

    Tôi có xinh không
    Answers: 0 Views: 13 Rating: 0
    vnq8today
    Answers: 0 Views: 13 Rating: 0
    W88 Zo
    Answers: 0 Views: 15 Rating: 0
    thenewhopemhcs
    Answers: 0 Views: 19 Rating: 0
    Nhà cái 8XBET
    Answers: 0 Views: 19 Rating: 0
    Tỷ lệ kèo nhà cái
    Answers: 0 Views: 15 Rating: 0
    Tỷ lệ kèo nhà cái
    Answers: 0 Views: 18 Rating: 0
    > More questions...
    451710
    questions
    719497
    answers
    751686
    users