Talk:Wave propagation

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[edit] Technical Accuracy of Article - My Concerns

It is stated in this article that:

The universal wave equation is:

v=f\lambda=\frac{\lambda}{T}=\frac{\omega}{k}

With all the units beautifully clarified, however this is a dispersion relation; not a wave equation:

v=f\lambda=\frac{\omega}{2 \pi}\frac{2 \pi}{k}=\frac{\omega}{k}

where v is the phase velocity.

The wave equation depends on the physics of the system being modelled.

Also, we must not forget that in a more dense material, EM waves travel slower than in a complete vaccum. I think this article needs major re-working, possibly starting with how a wave propagates. I'm going to work on something to expand this stub also (derivations of wave propogations). Possible candidates being - sound waves in a medium, waves on a guitar string and co-axial cable waves.

--Ukberry (talk) 13:56, 28 April 2008 (UTC)