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Libby and his team intially tested the radiocarbon method on samples from prehistoric Egypt.They chose samples whose age could be independently determined.

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Radiocarbon dating has been one of the most significant discoveries in 20th century science.

A sample of acacia wood from the tomb of the pharoah Zoser (or Djoser; 3rd Dynasty, ca. Libby reasoned that since the half-life of C years, they should obtain a C14 concentration of about 50% that which was found in living wood (see Libby, 1949 for further details).

The results they obtained indicated this was the case.

Renfrew (1973) called it 'the radiocarbon revolution' in describing its impact upon the human sciences.

Oakley (1979) suggested its development meant an almost complete re-writing of the evolution and cultural emergence of the human species.

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This exists primarily to help out professional photographers and photo storage tools. Let’s look at some of the data hidden inside of it: Create Date : 20 Make : Samsung Orientation : Horizontal (normal) Flash : No Flash Focal Length : 4.3 mm GPS Position : 28 deg 21′ 27.100″ N, 81 deg 33′ 29.71″ W Even with location geotagging disabled in your camera settings, metadata still provides a tremendous amount of detail about you and your devices, and can even uniquely identify photos taken with your camera.