The displacement of a waveform in time. Some electrical components introduce phase shift into a signal, and the shift is of the same angle for all frequencies. This means that each frequency is displaced differently and distortion occurs. Electrical cancellation may occur when two equal signals are out of phase by 180 degrees.
"In 1950 my grandfather gave an Armistice Day speech that was broadcast over a local radio station. That station provided him with a 16” transcription of that speech. Due to its fragility and the warning that it would deteriorate significantly after just a few playings, to my knowledge it was never played. I checked locally and there was no ..."