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ibeam
Beam theory shows that the I-shaped section is a very efficient form for carrying both bending and shear loads.
web
flange

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Now use the strength of an I-beam to protect your precious smartphone.
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From a more simplistic view, if you drop your phone the flanges will hit the ground first, not your phone screen.
Currently designed for the iPhone 5, the case can be adapted for any smartphone.
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