I'm sure most of you have heard of electromagnetic waves, wave-particle duality, etc. What I'm wondering is, how does everyone conceptualize waves when they think about them? Do you think of them in the sense of ripples though water (only through space instead)? In the case of electromagnetic waves, where are the photons in all of this? I would just like to hear your thoughts, as I have just begun to really study quantum physics and waves is one thing I have trouble conceptualizing.