Circuit Sphere on Instagram: "Vala Afshar’s post redefines math as a tool for grasping real-world mechanisms, illustrated by a video of umbrellas rotating on a platform and seamlessly passing through a paper cutout shaped to match their profile. The optical illusion relies on projective geometry, where the 2D silhouette aligns perfectly with the 3D object during rotation, demonstrating how mathematical principles enable such deceptions without physical intersection. As a recurring post from Afsh