Feb 18, 2023 · The other sources of natural blue light are the moon and flames. Blue light is also produced by artificial sources that vary widely in their spectral distribution, mainly from LED technology. LEDs generally produce a small wavelength spectrum compared with the phosphor emission spectrum . Its conversion effectiveness depends on the emitting Feb 22, 2023 · Reflecting/scattering radiation from the skin surface depending on sebum content may be clinically significant not only in the context of exposure to solar radiation (which in turn may contribute to photoaging and even skin cancer) but also in the context of numerous therapeutic methods based on artificial sources of radiation. Ultraviolet radiation (UVR) is part of the electromagnetic spectrum emitted naturally from the sun or from artificial sources such as tanning devices. Acute skin reactions induced by UVR exposure are erythema (skin reddening), or sunburn, and the acquisition of a suntan triggered by UVR-induced DNA damage. UVR exposure is the main cause of skin May 4, 2022 · This number estimates how long it may take before sun damage might occur. An index of 1-3 signifies a low possibility for UV damage, while an index of 8-10 means a high possibility. It is important to note that UV radiation can also be given off by artificial sources like welding machines, tanning beds, and lasers. Jun 13, 2003 · Overexposure to UV radiation from the sun and artificial sources is of considerable public health concern. UV radiation plays an important role in the development of skin cancer, cataracts, and other eye conditions, and suppresses the immune system. Cumulative UV radiation also results in premature skin ageing. Jul 26, 2021 · It is worth adding that, apart from sunlight, there are other sources of UV radiation that can induce photosensitivity reactions. The artificial sources of UVR are presented in Table 1. Among them are specialized lamps used in phototherapy and dental care as well as tanning beds used in solariums. Jun 20, 2022 · DIP may be induced by sunlight and artificial sources of UV radiation, such as medical phototherapy lamps, tanning beds, LEDs, UV lasers, light emitting diodes (LEDs) and other lamps used in industry . Given the UVA-dependency, DIP may be induced also through window panes at any time of the year. Ultraviolet Radiation Information for Older Adults and Their Caregivers June 2010 U ltraviolet (UV) radiation is released by the sun or artificial sources such as tanning beds or sun lamps. This fact sheet provides an overview of the major health problems linked to overexposure to UV radiation. Since the benefits of sunlight Among all artificial UV sources, xenon lights provide the best simulation of natural sunlight. With an appropriate filter combination (usually a borosilicate type), the xenon light irradiance spectrum can be adapted to match closely to natural sunlight over a broad range of wavelengths. Dec 19, 2023 · ultraviolet radiation, that portion of the electromagnetic spectrum extending from the violet, or short-wavelength, end of the visible light range to the X-ray region. . Ultraviolet (UV) radiation is undetectable by the human eye, although, when it falls on certain materials, it may cause them to fluoresce—i.e., emit electromagnetic radiation of lower energy, such as visible u4ns.