🔬 Light is amazing! Learn how light waves behave identically in eyes and cameras and how nature's 4-billion-year-old design inspired our modern technology in our latest mini science deep dive. The elegant physics of refraction! #physicsoflight
Basic Principles of Optical Instruments Optical instruments manipulate light to help us see objects more clearly. This happens through the fundamental principle of refraction - the bending of light as it passes through different media. Camera and Eye Both cameras and human eyes function similarly by focusing light onto light-sensitive surfaces: In cameras: Light enters through an aperture, is bent by a convex lens, and converges to form an inverted image on film or a digital sensor. In human eyes: Light passes through the cornea and pupil, is bent by both the cornea and lens, and converges to form an inverted image on the retina, which is then processed by the brain. In both cases, the shape and properties of the lenses determine how light rays are redirected to create a focused image. This focusing ability allows us to see objects clearly at various distances. The principle of refraction is fundamental to all optical instruments, from these simple examples to more complex systems like telescopes and microscopes, which use combinations of lenses or mirrors to magnify distant or tiny objects.
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