When you unlock a phone, step into view of a security camera or drive past a license plate reader at night, beams of infrared light - invisible to the naked eye — shine onto the unique contours of ...

Scientists in Switzerland have developed an ultra-thin metalens that converts invisible infrared light into visible light by halving its wavelength, using nanoscale patterns stamped into a special ...

While infrared light is invisible to most animals, there are some, including salmon, bullfrogs and snakes, that can see in ...

When you unlock a phone, step into view of a security camera or drive past a license plate reader at night, beams of infrared ...