[450] Transparent aluminum

[K1FSY]

http://www.nrl.navy.mil/media/news-releases/2015/transparent-armor-from-nrl-spinel-could-also-ruggedize-your-smart-phone

On 11/5/2015 11:21 PM, John Foege wrote:
> http://www.treehugger.com/sustainable-product-design/transparent-aluminum-its-real.html
> 
> 
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