I was comparing the periods of types of electromagnetic radiation and I noticed that types with longer wavelengths seem to travel a greater net distance for each period. Does this mean that types of electromagnetic radiation with longer wavelengths travel quicker to a certain point than electromagnetic radiation with shorter wavelengths?
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No, because the period is also longer, leaving the ratio of wavelength to period constant and equal to the speed of light. The equation
$$\frac{\lambda}{T}=c$$
holds for all wavelengths.
G. Smith
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All electromagnetic frequencies travel at the speed of light $c$. The radiation with longer wavelength $\lambda$ has a lower frequency $\nu$, such that $$\lambda\nu = c$$ (The period $T$ is just the inverse of the frequency, $T = \frac{1}{\nu}$)
Guy Inchbald
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