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There is a type of glass that can fade from Translucent to Opaque called ESG Switchable : r/interestingasfuck
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![TechEBlog on Twitter: "Forget window shades, ESG Switchable Glass can turn from clear to opaque in seconds. https://t.co/DSVZN1b9aB #gadgets #science #technology #geek https://t.co/HA9EqGtGbg" / Twitter TechEBlog on Twitter: "Forget window shades, ESG Switchable Glass can turn from clear to opaque in seconds. https://t.co/DSVZN1b9aB #gadgets #science #technology #geek https://t.co/HA9EqGtGbg" / Twitter](https://pbs.twimg.com/media/DQ90YoRUIAEEmhP.jpg)
TechEBlog on Twitter: "Forget window shades, ESG Switchable Glass can turn from clear to opaque in seconds. https://t.co/DSVZN1b9aB #gadgets #science #technology #geek https://t.co/HA9EqGtGbg" / Twitter
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