Color depth triangle does enclose a much larger gamut, so whether more than three primaries results in a difference to the human eye is not yet proven, since humans are primarily trichromats, though tetrachromats exist. Color depth Color depth or colour depth (see spelling differences), also known as bit depth, is either the number of bits used to indicate the color of a single pixel, in a bitmapped image or video framebuffer, or the number of bits used for each color component of a single pixel. For consumer video standards, such as High Efficiency Video Coding (H.265), the bit depth specifies the
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