Final answer:
Controlling the way light bends and reflects can be used to help people in various ways, such as in the design of telescopes and optical instruments, as well as in correcting vision problems with eyeglasses and contact lenses.
Step-by-step explanation:
Controlling the way light bends and reflects can be used to help people in various ways. One application is in the design of telescopes and other optical instruments. By accurately calculating the direction of reflected light beams and understanding how light is refracted when it passes through different materials, engineers can create instruments that enhance our ability to see and observe objects in space or on Earth. Another example is the use of lenses to correct vision problems. Eyeglasses and contact lenses use the principles of refraction to bend light in a way that helps people with nearsightedness, farsightedness, or astigmatism see more clearly.