Can anybody explain this in a few words or point me to a resource that lays it out? I'm particularly curious about what the scenarios where the four wire measurement would make a significant difference in the measurement, that isnt accounted for by something like a "relative" zeroing function.. . I'm familiar with how voltage drop in a cable can and does make a big difference.. I guess thats the situation I am most familiar with, especially when cables are undersized for the load.
lets say with tuned circuits.. would the ability to do four wire measurement help me learn what makes a coil or capacitor appropriate for a specific application (to have high Q?)
(getting rid of losses in a tuned circuit to increase its Q) - I already have a multimeter with a adequate amount of resolution for 95% of what I do but its not so great for measuring really low resistance.
I can see now how different surfaces behave a lot differently in terms of resistance measurement repeatability, Would four wire measurement help there? Why? This is just one of those dumb things that I find myself wondering about a fair amount that I haven't found a really good explanation for anywhere.
Thank you!