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Re: Some amazing archaeology
Posted: Sun Apr 04, 2010 10:33 am
by hackman
found some stuff on lydite or bassanite
http://en.wikipedia.org/wiki/Lydite
Ultraviolet radiation itself is invisible to the human eye, but illuminating certain materials with UV radiation prompts the visible effects of fluorescence and phosphorescence. Black-light testing is commonly used to authenticate antiques and banknotes. It is extensively used in non-destructive testing; fluorescing fluids are applied to metal structures and illuminated with a black light, whereby cracks and other artifacts can easily be detected. It can also be used to detect pet excreta for removal, such as urine, vomitus and other substances that are not always visible to the naked eye.
Re: Some amazing archaeology
Posted: Sun Apr 04, 2010 2:57 pm
by alien pimp
hackman wrote:found some stuff on lydite or bassanite
http://en.wikipedia.org/wiki/Lydite
Ultraviolet radiation itself is invisible to the human eye, but illuminating certain materials with UV radiation prompts the visible effects of fluorescence and phosphorescence. Black-light testing is commonly used to authenticate antiques and banknotes. It is extensively used in non-destructive testing; fluorescing fluids are applied to metal structures and illuminated with a black light, whereby cracks and other artifacts can easily be detected. It can also be used to detect pet excreta for removal, such as urine, vomitus and other substances that are not always visible to the naked eye.
yeah, nothing you haven't seen a zillion years ago, when those objects were made
