are derived in my book from the assumption that a wire can be cut into a lot of infinitesimal wires with a capacitance and inductance each. Can someone explain to me what these physically describe? What is it that travel with the speed of almost light. I don't think it's the drift velocity so it must be the information that the fields have changed back at the battery or something like that. But that should mean that the waves they describe are equivalent to the ones predicted by decoupling maxwell's equations. If so, that is just weird. Maxwell's equations have assumed nothing about the wires and their self-inductance and capacitance, so it's just weird that they should give the exact same. Also my book discusses how if you turn on voltage at the end of a circuit how the presence of a resistor later on the circuit is communicated via the telegraph equations. I want to understand this: Is it the bouncing of the physical electrons and their pushes against each other which communicates the presence of a change in the cable or is it the fields or something like that. Please just say as much as you can about this phenomenon because I don't really get it.