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Temporal light artefacts (TLAs) are undesired effects in the visual perception of a human observer induced by temporal light modulations. Two well-known examples of such unwanted effects are flicker and stroboscopic effect. Flicker is a directly visible light modulation at relatively low frequencies (< 80 Hz) and small intensity modulation levels.
Phylogenetic theory is an example of evolutionary theory. It is based on the evolutionary premise of an ancestral descendant sequence of genes, populations, or species. Individuals that evolve are linked together through historical and genealogical ties. Evolutionary trees are hypotheses that are inferred through the practice of phylogenetic ...
Darwinian evolution, Dunnell argues, holds that evolution is a two-step process in which variability generation is separate from mechanisms that sort that variability. While advocating "scientific evolution" as the basis for anthropological theory, Dunnell argued that the use of a strictly biological model was insufficient to explain cultural ...
The hominoids are descendants of a common ancestor.. Homo sapiens is a distinct species of the hominid family of primates, which also includes all the great apes. [1] Over their evolutionary history, humans gradually developed traits such as bipedalism, dexterity, and complex language, [2] as well as interbreeding with other hominins (a tribe of the African hominid subfamily), [3] indicating ...
The lower layers of the cave were later dated to 92,000 years ago, [28] and a series of hearths, several human bodies, flint artifacts (side scrapers, disc cores, and points [29]), animal bones (gazelle, horse, fallow deer, wild ox, and rhinoceros [29]), a collection of sea shells, lumps of red ochre, and an incised cortical flake were found. [28]
Spencer embraced a teleological notion where evolution was seen as having an ultimate and definite goal. Spencerian theory incorporated a progressive, unilineal explanation of cultural evolution in which human societies were seen as progressing through a fixed set of stages, from “savagery” through “barbarism” to “civilization”. [4]
The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life, beginning some 4 billion years ago down to recent evolution within H. sapiens during and since the Last Glacial Period.
Paleoanthropology or paleo-anthropology is a branch of paleontology and anthropology which seeks to understand the early development of anatomically modern humans, a process known as hominization, through the reconstruction of evolutionary kinship lines within the family Hominidae, working from biological evidence (such as petrified skeletal remains, bone fragments, footprints) and cultural ...