Figure 1. Photographs of the three different CCT of light, taken with digital camera. From left to right: 3,000K, 4,000K, and 6,500K light environment (CCT)

From

Effects of Light’s Colour Temperatures on Visual Comfort Level, Task Performances, and Alertness among Students

B.M.T Shamsul, C.C. Sia, Y.G Ng, K. Karmegan

American Journal of Public Health Research. 2013, 1(7), 159-165 doi:10.12691/ajphr-1-7-3