Microwave propagation vector

When microwaves propagate through a weakly conducting liquid, attenuation of their amplitude occurs. Electrons and ions present in the liquid are accelerated by the electric field vector of the wave at the same time they are decelerated by their interaction with the atoms or molecules of the liquid. The following considerations apply to electrons as well as to ions. The equation of motion of a charge carrier is given as... 

Since the electric field vector of the incident microwave radiation, Emw, is linearly polarized perpendicular to the broad face of the waveguide absorption cell (TEio-mode of propagation), the M-selection rules may be selected by the orientation of the waveguide cell with respect to the magnetic field. This may be... 

In the solenoid-type spectrometer operated in the Hio mode of propagation, the vector of the microwave radiation field is always perpendicular to the axis of the waveguide while the magnetic field of the solenoid points in the direction of... 

Already RF and microwaves are a part of the EM spectrum. They are made up of time- and space-varying rotating electric field and magnetic field vectors in planes perpendicular to each other whereas the wave propagates in a plane perpendicular to both these vectors. The area of interest as regards the RF/microwave measurements is to be able to measure the physical properties associated with these high-frequency EM waves. 

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