Ultraviolet radiation erythema effect After intense ultraviolet radiation, the epidermis will produce a variety of chemical mediators that release and spread to the dermis, causing local vasodilation, manifested by erythema in the skin. Medical research has found that, unlike erythema formed by burns, erythema caused by ultraviolet radiation disappears very slowly. Although the mechanism of the erythema effect has not been fully explained by scientists, there is a unified understanding of the upper limit of the erythema effect, that is, near 310 nm, that is, the erythema effect is the ultraviolet radiation effect of the UVB band. Harmful effects of ultraviolet radiation Scientific research has found that ultraviolet radiation can cause damage to the eyes and induce skin cancer. Intense ultraviolet radiation can damage the eye tissue, leading to conjunctivitis, damage to the cornea and lens, and is the main cause of cataract. According to statistics, in eye diseases, cataract is the world's first blinding disease. Therefore, preventing the eyes from being excessively irradiated with ultraviolet rays is an effective means for preventing cataracts. Pigmentation effect Pigmentation effect is also known as the black spot effect. It means that ultraviolet radiation penetrates deep into the skin, where the presence of quasi-melanin is oxidized to form melanin, which darkens the skin. If the UV radiation continues to illuminate, the continued production of melanin will form pigmentation. According to research, the effective band causing pigmentation is in the UVA band, and its peak is around 365 nm. In modern medicine, scientists use the pigmentation effect to treat white spots. Appropriate pigmentation not only caters to some people's pursuit of health, but also protects the dermis and stratum corneum. UV radiation health effect Ultraviolet radiation to the human body, the body's organic alcohol absorbs ultraviolet radiation, it will synthesize vitamin D, which is the health effect that people often say, which is very effective in preventing rickets and osteoporosis. Studies have shown that organic alcohol absorbs radiation at a wavelength of 220-320 nm, and the highest efficiency is near 280 nm. A typical example of the use of health effects is that doctors often advise parents to bring a certain amount of outdoor activities and sun exposure in the winter, which is very beneficial to promote bone development in infants and young children. In the clinical practice of the hospital, the health effect is also used to illuminate the human body with a special ultraviolet lamp to achieve the purpose of health care. In life, we can use ultraviolet radiation meter to carry out ultraviolet irradiance measurement in the fields of photochemistry, polymer material aging, flaw detection, ultraviolet light source, plant cultivation, and large-scale integrated circuit lithography. We offer various types of stairs and can also design custom cable railings, glass railings, or metal railings for new or existing staircases. When talking with customers regarding stairs and railing projects, we try to verse our clients in stair design terminology. Modern Stairs,Floating Stairs,Solid Wood Stairs,Metal Spiral Staircase HOPE IKEA , https://www.hopelkea.com
The role and harm of ultraviolet radiation