AntiqNova on Instagram: "When a beam of light passes through different glass shapes, its path changes because of refraction. Refraction happens when light moves from one medium to another—such as from air into glass—and its speed changes. This speed change forces the light to bend, and the exact direction of that bending depends entirely on the shape of the glass it travels through. In this setup, parallel red light rays first encounter different optical elements. A convex lens (thicker at the c