Wealth | Finance | Tech on Instagram: "When light travels through different lenses, its direction changes due to refraction. As light moves from air into glass, its speed changes, causing it to bend. The shape of the lens determines how this bending happens. A convex lens, thicker at the center, bends light inward and brings parallel rays together at a focal point. This is why convex lenses are used in cameras, microscopes, and the human eye to focus images clearly. A concave lens, thinner at th