Living bacteria embedded in silicone can absorb green LED light and re-emit it as red, offering a potential sustainable ...

Big punch in a small packageFlashlight technology has seen huge advances in the last ten years. With the development of the simple LED, lighting systems the size of rice grains are producing huge ...

EternaLight flashlights use a solid-state light-emitting diode (LED) source, which is more durable and has a longer life than a standard flashlight bulb. The eternaLight Model 3 Ergo Marine uses four ...

A research group has discovered significant nonreciprocal optical absorption of LiNiPO4, referred to as the optical diode effect, in which divalent nickel (Ni2+) ions are responsible for magnetism, by ...

Researchers say they have designed a laser diode that emits the shortest-wavelength ultraviolet light to-date, with potential applications in disinfection, dermatology, and DNA analyses. Nagoya ...

I have nine Garrity rechargeable flashlights. They plug into a wall socket to charge, and when power fails, the flashlight goes on, serving as an emergency lamp. What I love about this discontinued ...