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
The English People (essay) The English People (essay) The English People is an essay by English author George Orwell, first published in August 1947. It was commissioned in September 1943 by W.J.Turner, Collins's General Editor, for the series "Britain in Pictures". The idea for the series came from the Ministry of Information. It was published with twenty-five illustrations, eight of which were full-page colour plates, and included work by artists Edward Ardizzone, Dame Laura Knight, L.S. Lowry, Henry Moore, John Minton, and Feliks Topolski amongst others. Written during World War II, it presents Orwell's vision of what it meant to be "English". Orwell did