Smart window blocks rays without blocking views

https://www.ntu.edu.sg/news/detail/smart-window-blocks-rays-without-blocking-views

"energy-saving material for electrochromic (EC) windows... could block up to 70 per cent of infrared radiation... without compromising views through the window since it allows up to 90 per cent of visible light to pass through. The material is also about 30 per cent more effective in regulating heat... cheaper to make due to its durability... operates at the flick of a switch"

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