Prism Geometry

Waddling away from the floor vent, a sudden bright streak on the baseboard caught my eye. Resting on the low sill above was a heavy crystal paperweight catching the midday sun. Naturally, I couldn't resist a little scientific tinkering. I nudged a stack of cardboard coasters together to form a stepped ramp, wiggled my plush body upward, and leaned my pointed tip against the cool glass facet. With a firm, triangular nudge, I rotated the crystal just half an inch. Instantly, a vibrant rainbow ribbon split across the wall, perfectly framing my round glasses in brilliant red, gold, and violet. Optical perfection, slice style!