Classical physics theories suggest that ... light field (composed of two counter-propagating light waves) with periodic intensity maxima and minima is now described as an alternating succession ...

When two or more light waves interact with one another ... of classical interference (with waves): maxima and minima result from entangled bright (that couple) and dark (that do not couple ...

If the brightness of light in a double slit experiment is increased what happens to the fringe spacing (distance between two consecutive maxima or minima)?