Those in the 980-nm wavelength were converted to blue light, those in the 808-nm wavelength became green, and those above 1,532 nm were converted to red light. Not only could this help wearers of the ...
Physicists have developed a lens with 'magic' properties. Ultra-thin, it can transform infrared light into visible light by halving the wavelength of incident light. Lenses are the most widely used ...
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