However, since its conductors are not circular in cross-section, and since it is of little practical importance, it has been included in Chapter 5, under the heading of "lines of unusual cross-section ...

A second experiment can be carried out to investigate experimentally how the resistance of a metallic conductor at constant temperature depends on the area of cross section. The above experiment ...

Some, of course, are more widely used than others: particular mention should be made of the widespread use of triplate (Section 3.5) striplines in the production of cheap, high-quality, miniaturized ...