Last week I had to restock on my contact lenses for this coming year. To tell you the truth, I really like wearing my contacts more than my glasses. ( I really look funny with glasses on :)) But, I realized that these spectacles that we use have a lot to do with Physics. Basically, lenses use refraction to focus light. So glasses help focus images using refraction of light through the lenses. These lenses can be found in eye glasses and contact lenses, but also people without glasses or contacts have natural lenses found in our eyes. In our eyes, when light passes through it, the eye refracts it and focuses it on the retina, which is found in the back of our eyes and so we can process the image.
But for lenses in general, there are two types: converging lenses and diverging lenses.
Converging lenses are thinker in the center and refract light, while diverging lenses are thinner in the center and makes the light spread out.
2 comments:
I never even knew you wore contacts! i bet you look funny with glasses on too. haha juuuust kidding =) . are you near sighted or far sighted?
i hate wearing glasses too
but yes contacts are mo betta
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