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The neck and wrist are the two most common areas of a welder's body that are burned by UV light
Light, or visible light, is electromagnetic radiation within the portion of the electromagnetic spectrum visible to the human eye. [1] Visible light typically has wavelengths in the range of 400 to 700 nanometers (nm), corresponding to frequencies between 750 and 420 terahertz between infrared (which has longer wavelengths) and ultraviolet (which has shorter wavelengths). defined as a
In physics, the term "light" can more generally refer to electromagnetic radiation of any wavelength, visible or not.[4][5] Light in this sense also includes gamma rays, X-rays, microwaves, and radio waves. The main properties of light are intensity, the direction of propagation, frequency or wavelength spectrum, and polarization. Velocity in a vacuum is 299 792 458 meters per second (m/s), one of nature's fundamental constants.
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