How do two colors mix to make a new color? Answer: Think of light as a wave travelling from one place to another, with different colors produced by variation in the distance between peaks of the wave ...

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 ...

E-reader manufacturer iRex have announced [pdf link] that they intend to have a color, writable ebook reader on the market by 2011. The device, which is currently unnamed, will use a system of ...