@vhtc A page from a spiral-bound notebook features a diagram and text explaining "Why Is the Rainbow Curved?". The top section has a bulleted list outlining that rainbows form when sunlight enters round raindrops, refracts (bends), reflects internally, and disperses into 7 colors. Below this, a diagram illustrates sunlight hitting a spherical raindrop, showing the light path as it refracts upon entering, reflects inside, and then exits as a curved, colorful rainbow arc. A "Key Point" box at the bottom summarizes: "Rainbow is curved because light leaves round drops in an arc."