Calculating Velocity Factor
VF equals the reciprocal of the square root of the dielectric constant (relative permittivity), of the material through which the signal passes:
The VF of a lossless transmission line is given by:
where c is the speed of light, L is the distributed inductance (in henries per unit length) and C is the capacitance between the two conductors (in farads per unit length).
Read more about this topic: Wave Propagation Speed
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