This is just some stuff I've recently run across and probably doesn't have a whole lot of relevance; but I thought it was cool.
Most (if not all) multimeters use a two-point system for measuring resistances. A more accurate(?), at least for resistances << 1ohm, is a 4-point measuring system.
4-wire resistance measurement : DC CIRCUITS
Four-terminal sensing - Wikipedia, the free encyclopedia
Most (if not all) multimeters use a two-point system for measuring resistances. A more accurate(?), at least for resistances << 1ohm, is a 4-point measuring system.
4-wire resistance measurement : DC CIRCUITS
Four-terminal sensing - Wikipedia, the free encyclopedia
