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    Macquarie D's Avatar
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    Default Is the objective lens of Binoculars covex or concave?



    Need to know if the objective lens of binoculars is concave or convex

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    Michael Steen's Avatar
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    Default

    The objective lens is convex, just like a magnifying glass.
    BTW, convex means the edges are thinner than the middle, and concave means the edges are thicker than the middle. For a simple mnemonic device, think of the concave as caving in toward the center.

 

 

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