Photometers or light meters are radiometers that include a filter and photodiode and responds based on the average human eye: the CIE 1924 luminosity function V λ. However, the light sensitive diode ...

If there’s an engineering hierarchy of LED lighting, colour-mixing hard lights are at the top of it, combining all the difficulty of colour control with putting all the emitters in one place. For a ...

A multicolor laser pointer you can use to change the color of the laser with a button click -- similar to a multicolor ballpoint pen -- is one step closer to reality thanks to a new tiny synthetic ...

Light and Color is a 14-minute educational film produced by Encyclopedia Britannica Educational Corporation (EBEC). The film explains the nature of color, its relationship to light, and why objects ...