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Ultraviolet lasers can also be made by applying frequency conversion to lower-frequency lasers. [citation needed] Ultraviolet lasers have applications in industry (laser engraving), medicine (dermatology, and keratectomy), chemistry , free-air secure communications, computing (optical storage), and manufacture of integrated circuits.
Ultraviolet astronomy is the observation of electromagnetic radiation at ultraviolet wavelengths between approximately 10 and 320 nanometres; shorter wavelengths—higher energy photons—are studied by X-ray astronomy and gamma-ray astronomy. [1] Ultraviolet light is not visible to the human eye. [2]
A blacklight, also called a UV-A light, Wood's lamp, or ultraviolet light, is a lamp that emits long-wave ultraviolet light and very little visible light. [ 1 ] [ 2 ] [ 3 ] One type of lamp has a violet filter material, either on the bulb or in a separate glass filter in the lamp housing, which blocks most visible light and allows through UV ...
Most mammals cannot see ultraviolet light because their eyes are not designed to detect it. The reindeer, however, is an exception as it can see ultraviolet light. 7.
Ultraviolet photography can reveal features of living things that are not visible to humans. For example, since it is known that animals such as pigeons, [ 5 ] bees, [ 6 ] and Jumping spiders, [ 7 ] can see UV light, it is of interest to know what these animals are seeing in those wavelengths.
EMR of lower energy ultraviolet or lower frequencies (i.e., near ultraviolet, visible light, infrared, microwaves, and radio waves) is non-ionizing because its photons do not individually have enough energy to ionize atoms or molecules or to break chemical bonds. The effect of non-ionizing radiation on chemical systems and living tissue is ...
Ultraviolet coloration is used by 25 to 35 percent of angiosperms. [7] It was adapted by flowers to orient pollinators leading to an example of co-evolution. [8] UV light allows them to broadcast a guide to where their pollen is located. [4]
The pandemic has led to a boom in interest in UVC, or ultraviolet light in wavelengths of less than 280 nanometres, an effective killer of the coronavirus and other viruses.
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