fringe shift वाक्य

In the case of a Sagnac interferometer a measure of difference in arrival time is obtained by producing interference fringes, and observing the fringe shift . In the case of a relay of pulses around the world the difference in arrival time is obtained directly from the actual arrival time of the pulses.
Using a special optical arrangement involving a 1 / 20 wave step in one mirror, Roy J . Kennedy ( 1926 ) and K . K . Illingworth ( 1927 ) ( Fig . 8 ) converted the task of detecting fringe shifts from the relatively insensitive one of estimating their lateral displacements to the considerably more sensitive task of adjusting the light intensity on both sides of a sharp boundary for equal luminance.