Code of Federal Regulations > Title 16 > Chapter II > Part 1512 > Appendix - Table 4 to Part 1512

Regulations last checked for updates: Feb 04, 2026

Title 16 - Commercial Practices last revised: Dec 15, 2025

Appendix - Table 4 to Part 1512—Relative Energy Distribution of Sources

Wave length (nanometers)	Relative energy
380	9.79
390	12.09
400	14.71
410	17.68
420	21.00
430	24.67
440	28.70
450	33.09
460	37.82
470	42.87
480	48.25
490	53.91
500	59.86
510	66.06
520	72.50
530	79.13
540	85.95
550	92.91
560	100.00
570	107.18
580	114.44
590	121.73
600	129.04
610	136.34
620	143.62
630	150.83
640	157.98
650	165.03
660	171.96
670	178.77
680	185.43
690	191.93
700	198.26
710	204.41
720	210.36
730	216.12
740	221.66
750	227.00
760	232.11

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.