Regulations last checked for updates: Sep 10, 2025

Title 16 - Commercial Practices last revised: Sep 05, 2025
Appendix - Table 4 to Part 1512—Relative Energy Distribution of Sources
Wave length (nanometers) Relative energy
3809.79
39012.09
40014.71
41017.68
42021.00
43024.67
44028.70
45033.09
46037.82
47042.87
48048.25
49053.91
50059.86
51066.06
52072.50
53079.13
54085.95
55092.91
560100.00
570107.18
580114.44
590121.73
600129.04
610136.34
620143.62
630150.83
640157.98
650165.03
660171.96
670178.77
680185.43
690191.93
700198.26
710204.41
720210.36
730216.12
740221.66
750227.00
760232.11
authority: Secs. 2(f)(1)(D), (q)(1)(A), (s), 3(e)(1), 74 Stat. 372, 374, 375, as amended, 80 Stat. 1304-05, 83 Stat. 187-89 (15 U.S.C. 1261,1262; Pub. L. 107-319, 116 Stat. 2776
source: 43 FR 60034, Dec. 22, 1978, unless otherwise noted.