11. The Sun may therefore be said to equal-energy illuminant for most of this range. 12. Where the factor accounts for the two illuminants having the same chromaticity but different reference whites. 13. Starting with the SPD, let us verify that the CRI of reference illuminant F4 is 51. 14. For the general CAT02, the " corresponding " color in the reference illuminant is: 15. Two substances displaying the same color under one illuminant may look very different under a different illuminant. 16. Two substances displaying the same color under one illuminant may look very different under a different illuminant . 17. Illuminant A is approximated by a 115 volt, 40 watt T8 tungsten lamp inside the FALANT.18. Electric lighting started displacing kerosene as an illuminant in the late 19th century, especially in urban areas. 19. Suspecting that the oil may have potential as an illuminant and lubricant, he organized an investor group. 20. The Metamerism Index tests how well five sets of metameric samples match under the test and reference illuminant .
