Changes

Concave Lens

1 byte added, 12:42, 24 February 2019

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|[[File:ConcaveLens.png|center|100px]]

|[[File:~~ConcaveLensSymbol~~ConcaveLensDiagram.png|center|100px]]

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| style="height:20px; width:200px; text-align:center;" |A picture of a '''concave lens'''.

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