In school, I've been taught that waves follow the path/shape of a Sine. Often demonstrated by either a projection of a circle or by a swinging pendulum or shaking string.
I guess those are simple models with great academic value. But since we do live in a 3 dimensional space, I assume that in reality the path of light follows a spiral.- (However, I can't seem to find any source that confirms this.) After all water also prefers a spiral path when it flows down the kitchen sink.
My 1st question: does light indeed follow a spiral/corkscrew shape ?
Regardless of that, the speed of light is limitted. But since the light does not travel in a straight line. There seems to be an internal speed which is higher. i.e. If the amplitude and/or frequency are increased, then the net speed is still limitted (to
c, the speed of light), but the "internal speed" along the corkscrew shape increases. Well, maybe.
My 2nd question: what is the internal speed limit of an electromagnetic wave?, if there is one
This is the point where my head really starts spinning. What I'm really wondering about now, is that even in that case, the speed of light may not really be broken, even for the speed along the spiral path. The photon has its own clock, he may still perceives that he is moving at the speed of light, everything just appears to move a bit slower from his point of view. ... Or the spacetime may even be "curved" in some special way so that this wave doesn't really break the speed of light ? That's where I'm lost. Is this just nonesense?