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20 mar 2015 · What Makes the Sun So Harmful? Two words: ultraviolet (UV) radiation. This type of energy is so harmful to our heath that the United States Department of Health and Human Services and the...
Radiation at the longer UV wavelengths of 320-400 nm, called UV-A, plays a helpful and essential role in formation of Vitamin D by the skin, and plays a harmful role in that it causes sunburn on human skin and cataracts in our eyes.
21 gru 2022 · The role of UV radiation-induced immune modulation in the harms and benefits of sun exposure. Many of the harmful and beneficial effects of exposure to UV radiation are mediated through UV-induced effects on the immune system, both locally and systemically.
Ultraviolet (UV) irradiation present in sunlight is an environmental human carcinogen. The toxic effects of UV from natural sunlight and therapeutic artificial lamps are a major concern for human health.
Aside from its heat and visible light, the Sun also shines in ultraviolet (UV) light. Ozone in Earth's upper atmosphere blocks much of the UV. However, pollution can weaken the ozone shield. Then the Sun's UV light can harm living things on the ground and in the top layers of the oceans.
Higher up, in the stratosphere, the ozone layer absorbs solar ultra-violet radiation and affects how much of the Sun's heat is radiated back into space. The ozone layer shields us from the harmful effects of excessive UV radiation, which can lead to sunburn, skin cancer and eye damage. Aerosols
18 cze 2019 · Solar ultraviolet radiation (UVR) has traditionally been viewed as being mutagenic and as causing damage to DNA, proteins and lipids, resulting in harmful consequences such as carcinogenesis and...
