: : : : Hmm, I don't remember electricity being in the electromagnetic : : spectrum. Is it just me?

: : : I have a question concerning light speed. We all know that visible light is simply a part of the electromagnetic wave which includes gamma rays, x-rays, ultraviolet, visible light, infrared, radio waves, and electricity (Idont know if I covered them all, but you get the idea). Now, I was wondering if anyone knows if the speed of light applies to all of the electromagnetic wave, or just visible light? And if only to light, then would not the rays with a higher wavelength travel faster than light? Just a thought.