Hans Christian Ørsted
lorenetworking
The Danish physicist who observed in 1820 that a current-carrying wire deflects a compass needle, showing electricity and magnetism to be one phenomenon.
Every motor, every transformer and every read head over a disk platter is this observation applied on purpose. So is every signal induced onto the wrong pair in a cable bundle: crosstalk is Ørsted's experiment happening when nobody asked for it. Cable design has spent two centuries arranging conductors so that his effect helps rather than interferes.
Also known as: orsted, ørsted