Invisible light beyond the range of human vision plays a vital role in communication technologies, medical diagnostics, and optical sensing. Ultraviolet and near-infrared wavelengths are routinely ...

Near-infrared light is invisible to humans. And yet, under the right conditions, the human eye can perceive it. Researchers ...

The universe has many faces. With a naked eye, we can spot the gold, white, and brassy hues of stars and other objects from our vantage point on Earth. But visible light illuminates just a fraction of ...

Researchers from Japan showed that a single organic crystal converts invisible light into visible colors, emitting red light under ultraviolet irradiation and green light under near-infrared ...

Researchers have solved a major problem for optical wireless communications - the process by which light carries information between cell phones and other devices. Light-emitting diodes (LEDs) pulse ...