Let there be light

Apparently any kind of electromagnetic radiation can either be particle or wave depending on how one chooses to look at it. Looking at it as a stream of particles makes it easy to visualize and the wave is easy to represent as a squiggly line doing its sinusoidal ondulations as it courses through space. And we say that it travels through space at 186,000 miles per second. But what travels at 186,000 miles per second? The photons as tiny little particles of light traversing the universe like a stream of shooting stars? Or is just a manifestation of the characteristics of the wave function?

The frequency established has a specific wavelength which in turn has a specific velocity but nothing is really going anywhere, just a whole lot of shaking going on! The wave is not a line wiggling in space, it is more of an expanding pulsation of intensification that ripples through space where the frequency remains the same unless disrupted by gravity. This means that it is not only the medium that changes as the radiation pulsates through it but the intensity itself of the lightwave that is changing as well. Now, once the sine wave is established, does anything really move or does it simply stand in place, doing the wave, like spectators at a hockey game?

As I take in light's pulsations, I bask in the everpresent now. I can see the waves rolling towards me, surging beneath me, and receding into the distance. What is it that made Einstein think of waves and trains and what does that have to do with alarm clocks?