Via Gizmodo, here is a well-produced video explaining the basics of color temperature. I highly recommend this for anyone just starting out or interested in the basics of light. I even learned a few new things — I never knew the back story that Max Planck was hired by German lighting companies to figure out the ideal temperature for operating incandescent filaments. And for the record, one thing the video doesn’t mention is the color temperature of candle light, which is approximately 1700K – 1800K.
the history and science of color temperature