Lenses - An Overview

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The concave mirror is used to reflect light again in fairly parallel rays.The condenser is designed up of two converging lenses that refract the light so all aspects of the slide are illuminated with parallel rays. When the lens is biconcave or plano-concave, a collimated beam of light passing through https://chancebo1jt.wiki-promo.com/5158903/a_review_of_eyes_lenses


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