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With diverging lenses, incoming parallel rays diverge right after experiencing the lens, in such a way they appear to have originated at a spot one particular focal duration before the lens. This is actually the lens's entrance focus. Rays from an item at a finite length are related with a https://glassesframes72692.blog-mall.com/30437465/5-tips-about-opticians-near-me-you-can-use-today

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