what is the meaning of ultraviolet catastrophe?
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The ultraviolet catastrophe, also called the Rayleigh–Jeans catastrophe, was the prediction of late 19th century/early 20th century classical physics that an ideal black body (also blackbody) at thermal equilibrium will emit radiation in all frequency ranges, emitting more energy as the frequency increases.
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Definition of ultraviolet. 1 : situated beyond the visible spectrum at its violet end —used of radiation having a wavelength shorter than wavelengths of visible light and longer than those of X-rays.
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UltraViolet is a women's advocacy group based in the United Kingdom. The group conducts online campaigns using social media to highlight women's issues such as violence against women, maternity leave, equal pay, and reproductive rights.
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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.
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Ultraviolet light is a type of electromagnetic radiation that makes black-light posters glow, and is responsible for summer tans — and sunburns. ... The common designations are radio waves,microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma-rays.
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UV radiation causing rising deaths in marine life. ... They found that the marine life most affected by ultraviolet B radiation (UVB) were protists such as algae, corals, crustaceans, and fish larvae and eggs, thereby affecting marine ecosystems from the bottom to the top of the food web.
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ultraviolet radiation. Radiation in the part of the electromagnetic spectrum where wavelengths are just shorter than those of ordinary, visible violet light but longer than those of x-rays.
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Too much ultraviolet (UV) radiation from the sun can damage DNA in your skin cells and cause skin cancer.
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Ultraviolet (UV) (Wavelength 10-7 - 10-8 meters) UV-C rays are the most harmful and are almost completely absorbed by our atmosphere. UV-B rays are the harmful rays that cause sunburn. Although UV waves are invisible to the human eye, some insects, such as bumblebees, can see them.
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Excessive UV radiation is the leading cause of, primarily, non-malignant skin tumors. Sunburn is an inflammatory response in the tissue triggered by direct DNA damage by UV radiation. When the cells' DNA is overly damaged by UV radiation, type I cell-death is triggered and the tissue is replaced.
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From Wikipedia, the free encyclopedia. The ultraviolet index, or UV Index, is an international standard measurement of the strength of sunburn-producing ultraviolet (UV) radiation at a particular place and time.
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Ultraviolet rays is the type of electromagnetic radiation causes certain substances to fluoresce.
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Ultraviolet light (UV) is a strong mutagen (in the wavelength that DNA absorbs, roughly 225-300 nm) and primarily generates dimers between adjacent pyrimidine bases on the same DNA strand. ... The effects of mutagenesis can be reversed by photoreactivation, a light-dependent DNA repair mechanism.
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Coined by Paul Ehrenfest in 1911 in German. From the explosion of energy at the ultraviolet end of the spectrum (away from visible and infrared light) caused by the Rayleigh-Jeans Law theory.
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The UV rays in sunlight cause this damage. Occasional damage to DNA is normally repaired by the body. It is the long-term exposure to UV rays that causes irreparable damage to DNA. The mutated DNA causes cells to mutate and divide uncontrollably.
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The UV Index provides a daily forecast of the expected risk of overexposure to the sun. The Index predicts UV intensity levels on a scale of 0 to 10+, where 0 indicates a minimal risk of overexposure and 10+ means a very high risk.
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UV (Ultraviolet) Light refers to the region of the electromagnetic spectrum between visible light and X-rays, with a wavelength falling between 400 and 10 nanometers.