Young's double slit experiments representing the mystery of quantum mechanics have been descripted by wave theories. To study the mystery, the double slit experiments were extended to the cross-double slit experiments. A description should explain all the double slit and cross-double slit experiments consistently. To test the wave description, the two postulates are proposed, which state that before passing through the double slit and before landing on the detector, photons behave as particles, but not as waves. To test the two postulates, the comprehensive double slit/cross-double slit experiments are proposed and performed. By placing shields and/or blockers near the detector/screen, the comprehensive double slit/cross-double slit experiments show that the fringes are created independently and partially, which discloses the particle nature of photons in the double slit/crossdouble slit experiments and violates the wave descriptions. The comprehensive double slit/cross-double slit experiments provide the comprehensive phenomena for developing theoretical model to study the mystery of double slit, complementarity principle, wave-particle duality, and wave theory of light.
Feynman (1956) called the double slit experiment "a phenomenon […] has in it the heart of quantum mechanics. In reality, it contains the only mystery". Penrose (2022) states that “the current quantum mechanics […] is an inconsistent theory”. To study the mystery, explore the nature of light, and test Penrose’s statement, we experimentally show, for the first time, Four Novel Phenomena that are also new mysteries. Single slit Parallel double slit Non-parallel double slit Curved double slit (1) in the same double slit experiment, within macroscopic distances from the diaphragm, the patterns are non-interference and then, gradually evolve to the orthogonal interference patterns; (2) in the same single slit experiment, within macroscopic distances from diaphragm, the patterns are non-diffraction and then, gradually evolve to the orthogonal diffraction patterns; (3) in the non-parallel-double-slits experiment, within macroscopic distances from diaphragm, we observe non-wave pattern and then, which gradually evolve to the hybrid patterns, namely the interference pattern embedded in the diffraction patterns; the hybrid patterns depend on the angle between two slits; (4) Curved-double slit produces non-wave pattern, then gradually evolve to Arc-interference pattern, and then, gradually evolving to Point-symmetry interference pattern. In order to show the universality of each of Four Novel Phenomena, we performed several experiments for each of Four Novel Phenomena. The differences between the single slit, parallel-double slit, non-parallel-double slit and Curved-double slit do not seem so suggestive. However, the patterns are unexpectedly fundamentally different. To consistently/completely explain above Four Novel Phenomena is the challenge to the existing wave theories. The new experimental phenomena support Penrose’s statement. Advances in physical optical experiments demand a consistent/complete theory.
Feynman (1956) called the double slit experiment "a phenomenon […] has in it the heart of quantum mechanics. In reality, it contains the only mystery". Penrose (2022) states that “the current quantum mechanics […] is an inconsistent theory”. To study the mystery, explore the nature of light, and test Penrose’s statement, we experimentally show, for the first time, Four Novel Phenomena that are also new mysteries. Single slit Parallel double slit Non-parallel double slit Curved double slit (1) in the same double slit experiment, within macroscopic distances from the diaphragm, the patterns are non-interference and then, gradually evolve to the orthogonal interference patterns; (2) in the same single slit experiment, within macroscopic distances from diaphragm, the patterns are non-diffraction and then, gradually evolve to the orthogonal diffraction patterns; (3) in the non-parallel-double-slits experiment, within macroscopic distances from diaphragm, we observe non-wave pattern and then, which gradually evolve to the hybrid patterns, namely the interference pattern embedded in the diffraction patterns; the hybrid patterns depend on the angle between two slits; (4) Curved-double slit produces non-wave pattern, then gradually evolve to Arc-interference pattern, and then, gradually evolving to Point-symmetry interference pattern. In order to show the universality of each of Four Novel Phenomena, we performed several experiments for each of Four Novel Phenomena. The differences between the single slit, parallel-double slit, non-parallel-double slit and Curved-double slit do not seem so suggestive. However, the patterns are unexpectedly fundamentally different. To consistently/completely explain above Four Novel Phenomena is the challenge to the existing wave theories. The new experimental phenomena support Penrose’s statement. Advances in physical optical experiments demand a consistent/complete theory.