Home Depot has announced a new line of white LED light bulbs under its EcoSmart brand. EcoSmart Universal Select Light Bulbs ...

1 shows a white-light LED in action). It is possible to generate ... of a lower value for the colour-rendering index (CRI; see Box 1 for definition), which is typically so low that such devices ...

An RGB LED. By mixing the red, green, and blue colors, this LED can emit white light The first white LEDs weren’t explicitly white LEDs. Instead, red, green, and blue LEDs were packed into a ...