Color Color Color (American English), or colour (Commonwealth English), is the characteristic of human visual perception described through color "categories", with names such as red, orange, yellow, green, blue, or purple. This perception of color derives from the stimulation of cone cells in the human eye by electromagnetic radiation in the visible spectrum. Color categories and physical specifications of color are associated with objects through the wavelength of the light that is reflected from them. This reflection is governed by the object's physical properties such as light absorption, emission spectra, etc. By defining a color space, colors can be identified numerically
American Journal of Physical Anthropology of biology and medicine, along with the "American Journal of Botany", "British Medical Journal", "Journal of Paleontology", "Journal of the American Medical Association", "Journal of Zoology", "Nature", "New England Journal of Medicine", "Proceedings of the National Academy of Sciences", and "Science". According to the Journal Citation Reports, its 2011 impact factor is 2.824, ranking it 6th out of 79 in the category "Anthropology" and 23rd out of 45 in the category "Evolutionary Biology". Additionally, the journal has earned the most citations in the category "Anthropology" each year for over a decade. The Yearbook of Physical Anthropology is an annual peer-reviewed