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 total electromagnetic radiation output from the Sun. It is also produced by electric arcs, Cherenkov radiation, and …
ultraviolet radiation - Encyclopedia Britannica
6 天之前 · 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?
Facts About Ultraviolet Radiation | Radiation and Your Health
2024年2月20日 · Ultraviolet (UV) radiation is a form of non-ionizing radiation that is emitted by the sun and artificial sources. The beneficial effects of UV radiation include the production of a vital nutrient, vitamin D.
Ultraviolet (UV) Radiation - FDA
What is UV radiation? How is radiation classified on the electromagnetic spectrum? What are the different types of UV radiation? What Is UVC radiation? What are the risks of exposure to UVC...
Radiation: Ultraviolet (UV) radiation - World Health Organization …
2016年3月9日 · 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. As sunlight passes through the atmosphere, all UVC and most UVB is absorbed by ozone, water vapour, oxygen and carbon dioxide.
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 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 Radiation | Radiation and Your Health | CDC
2024年2月15日 · Ultraviolet (UV) radiation is a form of non-ionizing radiation that is emitted by the sun and artificial sources, such as tanning beds. While it has some benefits for people, including the creation of Vitamin D, it also can cause health risks.
Ultraviolet (UV) Radiation: What It Is & Its Effect on Your Skin
What is ultraviolet radiation? Ultraviolet (UV) radiation is a form of energy that the sun produces. You can’t see UV radiation because its wavelengths are shorter than visible light.
Ultraviolet Radiation - Johns Hopkins Medicine
Ultraviolet (UV) radiation is a type of light. Sunlight has UV rays, along with other kinds of rays. Some light bulbs give off UV rays, too. UV light bulbs are used in tanning beds and lamps, some nail dryers, machines used by dermatologists, and more. Types of UV rays. There are 3 …
- 某些结果已被删除