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Below is the Wikipedia URL shows the shape of EM wave.
http://upload.wikimedia.org/wikipedia/commons/3/35/Onde_electromagnetique.svg"
Electromagnetic laws say that'
"changing magnetic field produce electric field and changing electric field produce magnetic field"
In the representation of EM waves, In an instant, the magnitude of electric field and magnitude of magnetic field at a point in the propagation direction are equal in magnitude but their directions are perpendicular to each other and to the propagation direction. It shows electric field and magnetic field are simultaneously zero at a time and simultaneously maximum at another time.
Both are sinusoidal. Mathematically for sinusoidal waveform, maximum change occurs at zero crossing and minimum change occurs at its peak value. So magnetic field should be maximum when electric filed is zero. Similarly electric filed should be maximum when magnetic filed is zero. This makes 90 degree phase shift in actual EM wave propagation diagram. So which is the correct representation?
http://upload.wikimedia.org/wikipedia/commons/3/35/Onde_electromagnetique.svg"
Electromagnetic laws say that'
"changing magnetic field produce electric field and changing electric field produce magnetic field"
In the representation of EM waves, In an instant, the magnitude of electric field and magnitude of magnetic field at a point in the propagation direction are equal in magnitude but their directions are perpendicular to each other and to the propagation direction. It shows electric field and magnetic field are simultaneously zero at a time and simultaneously maximum at another time.
Both are sinusoidal. Mathematically for sinusoidal waveform, maximum change occurs at zero crossing and minimum change occurs at its peak value. So magnetic field should be maximum when electric filed is zero. Similarly electric filed should be maximum when magnetic filed is zero. This makes 90 degree phase shift in actual EM wave propagation diagram. So which is the correct representation?
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