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propagation constant

   Also found in: Wikipedia 0.01 sec.
propagation constant [‚präp·ə′gā·shən ‚kän·stənt]
(electromagnetism)
A rating for a line or medium along or through which a wave of a given frequency is being transmitted; it is a complex quantity; the real part is the attenuation constant in nepers per unit length, and the imaginary part is the phase constant in radians per unit length.


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In general, pressure increases the propagation constant, whereas it decreases the initiation and termination constants.
Figure 10 shows the calculated propagation constant, [gamma], which consists of the attenuation and phase constants, as a function of frequency for 80 and 400 ohm versions of 1" foams.
 
 
 
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