Invention on Instagram: "This effect is a modern version of the classic Pepper’s Ghost illusion, a technique that’s been used in theaters and museums for over a century. The setup uses a clear glass or acrylic panel positioned at a precise angle so it can reflect objects off to the side while still allowing you to see straight through it. In the video, the reflected pens line up perfectly with the real hand behind the glass, which is what sells the illusion. When the angles are correct, your bra