Yahoo Poland Wyszukiwanie w Internecie

Search results

  1. Everyone is exposed to UV radiation from the sun and an increasing number of people are exposed to artificial sources used in industry, commerce and recreation. The sun is by far the strongest source of ultraviolet radiation in our environment.

  2. en.wikipedia.org › wiki › UltravioletUltraviolet - Wikipedia

    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 specialized lights, such as mercury-vapor lamps, tanning lamps, and black lights.

  3. 21 cze 2022 · Key facts. Skin cancers are caused primarily by exposure to ultraviolet radiation (UVR), either from the sun or from artificial sources such as sunbeds. Globally in 2020, over 1.5 million cases of skin cancers were diagnosed and over 120 000 skin cancer-associated deaths were reported.

  4. 29 lip 2024 · Ultraviolet (UV) radiation covers the wavelength range of 100–400 nm, which is a higher frequency and lower wavelength than visible light. UV radiation comes naturally from the sun, but it can also be created by artificial sources used in industry, commerce and recreation.

  5. 23 wrz 2024 · 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. Its wavelengths are between 400 and 10 nanometers. Learn more about ultraviolet radiation.

  6. 1 mar 2024 · Solar radiation is the Earth's predominant energy source, containing a substantial quantity of ultraviolet (UV) rays. UV radiation exists mainly in the form of electromagnetic energy, which is invisible and imperceptible to human senses, and has both good and bad effects on human health.

  7. 20 lut 2024 · 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.

  1. Ludzie szukają również