The existence of three-dimensional effects at cracks has been known for many years. but understanding has been limited. and for some situations still is. Understanding improved when the existence of corner point singularities and their implications became known. https://www.bekindtopets.com/hot-find-DC-Comics-The-Flash-Movie-Batman-Poster-iPhone-14-Pro-Waterproof-Case-p17538-special-save/