Hakkında
Timothy J. Jorgensen is professor of radiation medicine and biochemistry, and director of the Health Physics Graduate Program, at Georgetown University in Washington DC. His scientific expertise is in radiation biology, cancer epidemiology, and public health. He lives in Rockville, Maryland.
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Alıntılar
Sezgileri kuvvetli bir bilim insanı, önemli bir keşif yapma şansını laboratuvarda gereken emeği vererek kendi kendine elde ederdi. Sıradan bir gözlemci, laboratuvarında asılı olan florasan ekrandan gelen tuhaf ışıltıyı önemsemeyebilirdi. 
Although UV radiation does not have energy sufficient to ionize atoms, it does have sufficient energy to move the atom’s electrons to higher energy states. Such atoms are said to be in an excited state . As with all excitement, it subsides with time. But in the meantime, such atoms can undergo excited-state chemical reactions that don’t normally occur when the atoms are not excited. Excited-state reactions can produce specific types of biochemical damage that are harmful to cells. So high exposures to UV radiation can produce skin burns (i.e., sunburns) and skin cancer.
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