Ultraviolet light is a term that is used to describe electromagnetic radiation. Ultraviolet wavelengths are shorter than human visible light. It is present in sunlight and can cause chemical reactions in certain materials. This reaction makes them glow, which is called fluorescence. UV testing looks at UV detection for commercial use of the UV spectrum and UV protection. A more intense commercial use than UV testing is to determine the color fastness of a product. Samples are sent to UV testing labs where they are exposed to UV light in a controlled environment.
Solar simulators are used to generate UV radiation and simulate months or years of exposure to the sun, a source of UV light. Paints exposed to prolonged sunlight, such as exterior architectural paints or automotive paints, can be tested to determine the life of the paint. This allows manufacturers to modify the chemicals used in the product if necessary.
UV testing also allows manufacturers to increase the level of UV resistance on product packaging, which can cause sunburn if overexposure to UV rays. Textile manufacturers also use UV testing to determine how long a product will remain colorfast. If dyes are added during production to fade too quickly, the product may begin to degrade. Knowing the lifespan of dyes helps companies make better products. This also applies to other materials like plastic and paper. A UV test is often used to calibrate tanning beds.
Another commercial use of UV testing is for photostability. This refers to how chemicals react when exposed to sunlight. Drugs can be affected, especially if exposed to sunlight, not as well. Ultraviolet detection can help understand changes in harmful or harmful reactions that may occur during exposure.
Overexposure to UV rays can lead to skin cancer and sunburn from UV rays, which are also the rays used for tanning. UV light is the leading cause of skin cancer, and UV testing is used to ensure proper calibration of tanning beds. UVB rays are more intense than UVA rays, and often the cause of sunburn is that it affects the outermost layer of the skin, which can be detected by a radiometer. Radiometers are used to measure levels of UV radiation. He does this by determining how much radiation is converted into energy.