GE denotes color temperature using SP27 to indicate a light with a color temperature of 2700 Kelvins. A GE 4-foot fluorescent tube that says SP30, ... Color rendering is measured on a scale of 0-100, ...

The color temperature of light denotes how the light appears on a spectrum from warm (yellow-toned) to cool (blue-toned). It's measured in degrees of Kelvin (K) on a scale from 1,000 to 10,000.

Understanding the Color Temperature Scale. Soumi Sarkar. ... Ranging from 1,000K to 6,000K, soft or warm light is the lowest color temperature, producing the coziest-feeling light.

Once you understand what color temperature is and why it matters, you can choose the right types of light bulbs to improve the quality of your life at home.

Color temperature is the scientific measurement of a light source’s level of color when heated, covering a range from warmer orange to cool blue tones. It describes the coolness or warmth of a ...

And yet there was something sublime about a light source that is the physical embodiment of a theoretical blackbody radiator, upon which Lord Kelvin based the Correlated Color Temperature (CCT) scale.

“The color temperature is important, but it's not going to matter if you are over-lighting or wasting light,” Heinmiller said. Related: You can see the Milky Way from Nantucket.