Biophysical and physiological effects of solar radiation on human skin by paolo u giacomoni
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‘‘Its not the substance, it’s the dose which makes something poisonous!’’
When Paracelsius, a German physician of the fourteenth century made this
statement, he probably did not think about light as one of the most obvious
environmental factors. But his statement applies as well to light. While we
need light, for example, for vitamin D production too much light might cause
skin cancer. The dose makes the difference. These diverse findings of light
effects have attracted the attention of scientists for centuries. The photosci-
ences represent a dynamic multidisciplinary field which includes such diverse
subjects as behavioral responses of single cells, cures for certain types of
cancer and the protective potential of tanning lotions. It includes photobiol-
ogy and photochemistry, photomedicine as well as the technology for light
production, filtering and measurement. Light is a common theme in all these
areas. In recent decades a more molecular centered approach changed both
the depth and the quality of the theoretical as well as the experimental
foundation of photosciences.
کتاب : تاثیرات بیولوژیکی و فیزیولوژیکی تابش های خورشیدی روی پوست بدن انسان
