File talk:Lens shapes.svg

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Incorrect sign for r1 in Figure 8?

[edit]

I believe the sign in parentheses for r1 in Figure 8 is incorrect. I believe it should be labeled as "r1 (+)". I would change it, but I'm unfamiliar with how to edit the SVG file. Sbb (talk) 14:09, 12 July 2019 (UTC)[reply]

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