Page:Letter Circular 454; hues of the spectrum colors (IA lettercircular45454nati).djvu/5

Authority	Date	Wave Length in Millimicrons.
		Red	R-0	Orange	O-Y	Yellow	Y-G	Green	G-B	Blue	B-V	Violet
Helmholtz	1866	687	656								431
Bezold	1874		656		589	578	558	532	502	468	432
Donders	1884					582		533		485
Rood	1890	700	621	597	588	581		527	502	437	438	406
Voeste	1902					577		498		476
V. kries	1907					574		503
Westphal	1909					574		506		479
Dreher	1911					575		509		477
Ridgway	1912	644		598		577		520		473		410
Goldytsch	1916									468
Bradley	1920	656		608		579		514		469		421
Goldmann	1922					568		504		468
Priest	1926	680				583		515		475
Brückner	1927					578		498		471
Shubert	1928					574		500		467
Weld	1932		622		597		577		492		456
Gage	1933		625		600
Verbeek	1935		605	598	587	580	569	530	496
Maximum			656	608	600	583	577	535	502	485	456	421
Average			631	600	592	577	568	515	498	473	439
Minimum		644	605	597	587	568	558	498	492	467	431