I made a commitment to understand special relativity. Right now I'd like to understand Electro-Magnetic Radiation. What would it "look like"if I could see it emanate. From a book (Simply Einstein) I'm told any movement of an electric charge (e.g. an electron) can start an electromagnetic wave. Now that is cool. So, finally, my question - once a wave is started does it emanate in all directions (a rock thrown in a lake goes in all directions in 2 dimensional lake surface, so would shaking an election start an emf wave that expands as an ever-growing surface of a sphere. That is, a sphere whose radius is growing at the speed of light? If so, where is the photon on this sphere?
You are right; when an electric charge is forced to vibrate in all directions, it gives off electromagnetic radiation in all directions. You can think of this as consisting of a large number of photons being sprayed in all directions. That radiation then moves away through space as an expanding spherical wavefront, traveling at the speed of light.