Basics of Analytical Geometry - SlideServe

decode world on Instagram: "This Halloween-timed post shares a viral video montage of shadow illusions, where performers use precise body positioning and light sources to create seemingly autonomous figures like giant hands or fighting shadows, amassing over 700,000 views. The tricks demonstrate basic optics: shadows distort and merge due to inverse square law of light intensity and projective geometry, allowing small actions to project exaggerated forms on walls, as explored in vision science r

Projective Geometry - SlideServe

Explains Cosmos on Instagram: "Updated caption (same style, refined): Vala Afshar’s post reframes math as a lens for understanding real-world mechanics, showcased through a mesmerizing video of umbrellas rotating on a platform and gliding flawlessly through a paper cutout shaped to their exact silhouette. The illusion is powered by projective geometry, where a 2D outline aligns precisely with a rotating 3D form, proving how mathematical principles can create the appearance of impossibility witho