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===Meaning===
A '''convex''' [[lens]] is a shaped piece of [[glass]] that is thickest at the centre and thinnest at the edges.
{| class="wikitable"
|-
|[[File:ConvexLens.png|center|200px]]
|[[File:ConvexLensSymbol.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |A picture of a '''convex lens'''.
| style="height:20px; width:200px; text-align:center;" |They symbol used in [[diagram]]s to represent a '''convex lens'''
|}