Search results
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.
- Ultraviolet Radiation
Often called black light, ultraviolet radiation is invisible...
- Tanning
Other articles where suntan is discussed:...
- Skin
Human skin, in human anatomy, the covering, or integument,...
- Sunburn
Sunburn, acute cutaneous inflammation caused by overexposure...
- Ultraviolet Astronomy
Ultraviolet astronomy, study of the ultraviolet spectra of...
- Carcinoma
carcinoma, a cancerous growth of surface tissues of the...
- Psoriasis
Psoriasis, a chronic, recurrent inflammatory skin disorder....
- Excitation
Excitation, in physics, the addition of a discrete amount of...
- Ultraviolet Radiation
24 sie 2023 · 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 visible...
Ultraviolet light is a type of ionizing radiation. It can damage or kill cells. Any electromagnetic radiation (light) that has a wavelength shorter than 450 nm may cause trouble. Therefore, humans that live in places with more ultraviolet light have adapted by getting darker skins.
What is UV? 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. Solar emissions include visible light, heat and ultraviolet (UV) radiation.
Often called black light, ultraviolet radiation is invisible to the human eye, but when it falls on certain surfaces, it causes them to fluoresce, or emit visible light.
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.
1 kwi 2023 · 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 .
