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Radiocarbon determinations luminescence dating and australian archaeology

radiocarbon determinations luminescence dating and australian archaeology-16

If the luminescence is caused by absorption of some form of radiant energy, such as ultraviolet radiation or X rays (or by some other form of energy, such as mechanical pressure), and ceases as soon as (or very shortly after) the radiation causing it ceases, then it is known as fluorescencefluorescence, luminescence in which light of a visible color is emitted from a substance under stimulation or excitation by light or other forms of electromagnetic radiation or by certain other means......phosphorescence, luminescence produced by certain substances after absorbing radiant energy or other types of energy.

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There are many types of luminescence, including chemiluminescence, produced by certain chemical reactions, chiefly oxidations, at low temperatures; electroluminescence, produced by electric discharges, which may appear when silk or fur is stroked or when adhesive surfaces are separated; and triboluminescence, produced by rubbing or crushing crystals.Various types of luminescence are often distinguished according to the source of the energy which excites the emission.When the light energy emitted results from a chemical reaction, such as in the slow oxidation of phosphorus at ordinary temperatures, the emission is called chemiluminescence.- Pleistocene occupation in arid Central Australia..4 The Archaeology of Sahul - Tim Murray..- notions of the Pleistocene in greater Australia..The dinoflagellates, a group of marine algae, produce light only when disturbed......

is luminescence produced by living organisms and is thought to be a type of chemiluminescence.

The luminescence observed in the sea is produced by living organisms, many of them microscopic, that collect at the surface.

Other examples of bioluminescence include glowworms, fireflies, and various fungi and bacteria found on rotting wood or decomposing flesh.

During the past thirty years the human history of the Australian continent has become the object of intense national and international interest.

These years have been the 'decades of discovery', featuring fieldwork and analyses which have rewritten the distant past of Australia almost on a yearly basis.

The Archaeology of Aboriginal Australia also conveys the fact that there is by no means a 'party line' among practitioners about how to understand more than 40,000 years of human action.