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visible radiation

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visible radiation
Etymology: L, visibilis, vision, radiare, to shine
electromagnetic radiation in the wavelengths between infrared and ultraviolet that can be perceived by most normal humans.


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This protects the DNA in the human cells from ultraviolet and visible radiation induced damage.
By using echolocation, "which is three-dimensional, and makes it possible to 'see' through materials that are opaque to visible radiation," it is possible to measure the distance of an object based on the time that elapses between the emission of a sound wave and an echo being received of this wave as it is reflected from the object.
Each HID lamp consists of an arc tube which contains certain elements or mixtures of elements which, when an arc is created between the electrodes at each end, gasify and generate visible radiation.
 
 
 
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