Monochromatic light of wavelength lambda, such as light from a laser, is directed through two narrow parallel slits that are a distance d apart. There is a viewing screen a very long distance R away from the slits that is used to observe the interference pattern that emerges from the light shining through the slits. The interference pattern is a series of alternating, equally spaced, bright and dark fringes, like that shown in the figure. If you submerged the entire apparatus into a tank of water, how is the new interference pattern different from the original one?