Uv penetration in material
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Ultraviolet (UV) is electromagnetic radiation with a wavelength from 10 nm to nm, shorter . Ultraviolet absorbers are molecules used in organic materials ( polymers, paints, etc.) to absorb UV .. The amount of sunscreen that penetrates into the lower layers of the skin may be large enough to cause damage.
A major factor for UV resistance is the bulk or thickness of the material: the thicker the material, the more UV resistant it is because less UV will penetrate through.
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Description:The following question was answered by an expert in the appropriate field: Q I want to build a bacteria-killing filter for a pool and fish pond. Would acrylic plastic about 1 centimeter cm thick prevent ultraviolet-C UV-C radiation from passing through? The alternative is probably quartz glass, but the advantage of acrylic or Plexiglas is that it is easier to work with.