Ultraviolet - Wikipedia
Ultraviolet radiation, also known as simply UV, 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 …
Ultraviolet radiation | Definition, Examples, Effects, Wavelengths ...
2024年11月11日 · Ultraviolet radiation is the portion of the extending from the violet, or short-wavelength, end of the visible light range to the X-ray region. How is ultraviolet radiation produced?
What Is Ultraviolet Light? - Live Science
2017年9月15日 · Ultraviolet light is a type of electromagnetic radiation that makes black-light posters glow, and is responsible for summer tans — and sunburns. However, too much exposure to UV radiation...
Radiation: Ultraviolet (UV) radiation - World Health Organization …
2016年3月9日 · Solar emissions include visible light, heat and ultraviolet (UV) radiation. Just as visible light consists of different colours that become apparent in a rainbow, the UV radiation spectrum is divided into three regions called UVA, UVB and UVC.
What is UV radiation and how does it affect health? - Medical News Today
2023年8月24日 · Ultraviolet (UV) radiation is one part of the electromagnetic spectrum of radiation that reaches Earth from the sun. It is a form of light energy situated on the spectrum just beyond...
Ultraviolet Waves - Science@NASA
2016年8月10日 · What is UV Light? Ultraviolet (UV) light has shorter wavelengths than visible light. Although UV waves are invisible to the human eye, some insects, such as bumblebees, can see them.
Ultraviolet Light or UV Radiation - Science Notes and Projects
2023年4月1日 · Ultraviolet light or UV is electromagnetic radiation in the wavelength range of 10 to 400 nanometers (nm), which is between x-rays and visible light. Because it is largely invisible to humans, another name for UV is black light.
Ultraviolet (UV) Radiation - Center for Science Education
Ultraviolet (UV) "light" is a type of electromagnetic radiation. UV light has a shorter wavelength than visible light. Purple and violet light have shorter wavelengths than other colors of light, and ultraviolet has even shorter waves than violet does; so ultraviolet is sort of "purpler-than-purple" light or "beyond violet" light.
Electromagnetic radiation - UV, Wavelengths, Absorption | Britannica
2024年10月24日 · When ultraviolet light strikes certain materials, it causes them to fluoresce—i.e., they emit electromagnetic radiation of lower energy, such as visible light.
What Is Ultraviolet Light (UV Light)? - Definition, Types, Effects ...
UV light (ultraviolet light) has a wavelength between 10 and 400 nm that is shorter than the visible light but longer than the X-rays and is a type of electromagnetic radiation. These are present in sunlight and contribute 10% of the total light from the sun.
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