Phase shift is any change that occurs in the phase of one quantity, or in the phase difference between two or more quantities.
is sometimes referred to as a phase shift or phase offset, because it represents a "shift" from zero phase. But a change in is also referred to as a phase shift.
For infinitely long sinusoids, a change in is the same as a shift in time, such as a time delay. If is delayed (time-shifted) by of its cycle, it becomes:
whose "phase" is now . It has been shifted by radians.
Read more about this topic: Phase (waves)
Famous quotes containing the words phase and/or shift:
“The problem of the twentieth century is the problem of the color-linethe relation of the darker to the lighter races of men in Asia and Africa, in America and the islands of the sea. It was a phase of this problem that caused the Civil War.”
—W.E.B. (William Edward Burghardt)
“Someone had literally run to earth
In an old cellar hole in a byroad
The origin of all the family there.
Thence they were sprung, so numerous a tribe
That now not all the houses left in town
Made shift to shelter them without the help
Of here and there a tent in grove and orchard.”
—Robert Frost (18741963)
