Two coupled angle braces one with sharp inner edge, and one with soft inner edge, are exposed to a tractive force (indicated by arrows). Polarized lig

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Two coupled angle braces one with sharp inner edge, and one with soft inner edge, are exposed to a tractive force (indicated by arrows). Polarized light makes the stress to the balk visible. The contrast intensity illustrates the areas with tensions.

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Size: 3276px × 2448px
Photo credit: © Kim Christensen / Alamy / Afripics
License: Royalty Free
Model Released: No

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