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4 giorni fa · Ultraviolet (UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun.
31 mag 2024 · 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 light. Many insects, however, are able to see ultraviolet radiation.
- The Editors of Encyclopaedia Britannica
- Ultraviolet radiation is the portion of the electromagnetic spectrum extending from the violet, or short-wavelength, end of the visible light range...
- Ultraviolet radiation is produced by high-temperature surfaces, such as the Sun’s, in a continuous spectrum and by atomic excitation in a gaseous d...
- No, ultraviolet radiation is undetectable by the human eye. Many insects, however, are able to see ultraviolet radiation.
- Ultraviolet radiation is useful as both a research tool and a sterilizing technique. It can also be used in fluorescent lamps, which are a more ene...
- The three basic skin cancers, basal- and squamous-cell carcinoma and melanoma, have been linked to long-term exposure to ultraviolet radiation and...
6 giorni fa · Ultraviolet (UV) radiation, present in sunlight, is an invisible form of electromagnetic radiation that has both beneficial and detrimental effects. It can be divided into three categories: UVA, UVB, and UVC, each with distinct characteristics and impacts.
21 mag 2024 · Ultraviolet light is so named as it is beyond violet. It has a shorter wavelength than violet light and a higher frequency and energy. X-rays come after UV light on the electromagnetic spectrum.
- Victoria Blackburn
30 mag 2024 · Ultraviolet (UV) radiation from the sun poses significant risks to eye health. It can potentially lead to various conditions, such as cataracts, macular degeneration, and even eye cancer. One way to safeguard your eyes from these harmful effects is by wearing sunglasses with proper UV protection.
30 mag 2024 · Solar radiation, electromagnetic radiation, including X-rays, ultraviolet and infrared radiation, and radio emissions, as well as visible light, emanating from the Sun.
- Harold Zirin
27 mag 2024 · electromagnetic spectrum, the entire distribution of electromagnetic radiation according to frequency or wavelength. Although all electromagnetic waves travel at the speed of light in a vacuum, they do so at a wide range of frequencies, wavelengths, and photon energies.
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