Are waves only 'waves' if you try and represent them in 2D? If an object emits waves in all directions are the waves more like expanding spheres? If a wave/sphere hits us and the source is sufficiently far away (and strong?) do we 'experience' it as though being hit by a plane? or multiple repeating planes, where the planes are more dense in the wave peaks and lesser in the troughs? Does wavelength refer to how narrow the distance between peaks & troughs are and is there a separate description for signal strength? Does it spread out like light photons do, over distance? (have I just described the same thing?) What about more directional emitters, would they be the same, only the planes are more local as it where? Can/do multiple waves of different wavelengths be hitting us at the same time? Is this because they can share the same quantum state? Given a sphere of #unlimited light sources shining inwards into a limited space, is there a limit to how many photons can occupy the same physical location? Are wavelength and speed independant? 20 questions, apologies feeling really enthusiastic.