signals

Papabravo

Joined Feb 24, 2006
21,094
It is because the algebra of complex numbers accurately models the magnitude and phase behavior of real signals. We could call them AC signal vectors if that would make you feel better.
 

ELECTRONERD

Joined May 26, 2009
1,147
ElectroMagnetic (EM) waves consist of an electric and magnetic field. They are perpendicular to eachother. So if someone told you that the magnetic field is horizontal you could imply that the electrical field is vertical, and therefore it is a vertical antenna.
 

mik3

Joined Feb 4, 2008
4,843
It is easier to manipulate complex numbers than vectors, thus they don't express signals in vectors (you can if you want).
 
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