Deeper Mysteries of Double Slit Experiments --- 1D and 2D Non-Interference and Interference Patterns

The normal double slit experiments (we refer to it as Straight-Parallel-double-slit) are basic experiments and Feynman’s mystery in the optics/quantum mechanics. In this article, we show the following new mysteries: the characteristics of the interference patterns of the optical slit experiments depend on whether the slits are straight-lines or curve-lines and whether two slits are parallel or non-parallel; and independent on whether there are missing segments at the intersection of, for example, cross-double-slit. We ignore the effects of both the width of the slits and the distance between two slits and then, show the following: there is no variable in Straight-Parallel-double-slit; Straight-Non-Parallel-double-slit has one variable, the angle between two slits; Curve-Parallel-double-slit has one variable, the curvature of the slits; Curve-Non-Parallel-double-slit has two variables, the angle and curvature, and the curvatures of two slits may be either the same or different. The characteristics of patterns depend on those variables. The complete and consistent interpretation is a challenge. The above experiments show deeper mysteries and would motivate further study of optics.