The visible light spectrum is “the segment of the electromagnetic spectrum that the human eye can view,” according to NASA. Our eyes can detect the wavelengths for this portion of the ...

Scientists in Switzerland have developed an ultra-thin metalens that converts invisible infrared light into visible light by ...

Yet there’s an entire world hidden from sight. Our eyes only perceive a narrow sliver of the spectrum—wavelengths between 400 and 700 nanometers make up what we call “visible” light. Infrared light, ...

Unlike night-vision goggles, which can only see infrared light in green, people wearing the contacts can see infrared light ...

Among the visible light spectrum, blue wavelengths have the most powerful effect on your sleep-wake internal body clock. Both natural and artificial blue light can boost your alertness and mental ...

The human eye can only see light at certain frequencies (called the visible spectrum), the lowest of ... they were able to up-convert infrared light of wavelength around 1550 nm to 622 nm visible ...