Color blindness all variations in human color vision involve the red and green receptors in male eyes. It is very rare for males or females to be "blind" to the blue end of the spectrum. The first scientific paper on the subject of color blindness, "Extraordinary facts relating to the vision of colours", was published by the English chemist John Dalton in 1798 after the realization of his own color blindness. Because of Dalton's work, the general condition has been called "daltonism", although in English this term is now used only for deuteranopia. Color codes present particular problems for those with color
Thomas Richardson (chemist) Thomas Richardson (chemist) Thomas Richardson FRS FRSE MRIA AICE (1816–1867) was an English industrial chemist, and industrial historian. Born on 8 October 1816 in Newcastle-upon-Tyne, he was educated there. Around 1830 he went to Glasgow University, to study Chemistry under Prof Thomas Thomson. Richardson then went to the University of Giessen, where, under Prof Justus von Liebig, he carried out researches on the composition of coal and the use of lead chromate in organic analysis, gaining a doctorate (Ph.D). He later went to Paris with Thomson, and completed his studies under Jules Pelouze. On his return to Newcastle, Richardson became