Crucial to this process is the fact that higher-energy light (for example ultraviolet or blue) is converted to lower energy (for example yellow or red). Therefore, LEDs emitting red light cannot ...

Or have them light automatically when someone arrives home and turn off when everyone leaves. After a new round of testing, the WiZ 60W A19 Color LED continues to be the best smart bulb.

Featuring Shark’s iQLED technology for even and effective coverage, the LED light therapy facial device delivers four treatments that combine red, infrared and blue lights for addressing fine ...

the white light comes from phosphors coating the underlying LED, which emits a deep blue light. The defunct units all showed signs of phosphor degradation. In some cases, the phosphors seemed ...