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A bracelet against sunburn
A bracelet against sunburn Created in Scotland, the bracelet changes color when ultraviolet exposure exceeds the recommended limits Researchers at the University of Strathclyde, in Glasgow, have developed a simple and economical system to prevent the risks of excessive exposure to the sun: a water-resistant bracelet. The Smartsun device changes color according to the amount of exposure that the user receives from UV rays. The bracelet is originally yellow, but turns pink as the exposure increases, warning its users to put themselves in the shade. The sensitivity of this material to ultraviolet light makes it possible to warn of danger even before the skin is damaged. How does it work? The Smartsun bracelet monitor works by changing the color, a purely chemical process created by an acid-releasing agent that detects ultraviolet light and a contrast that responds to the pH levels in the indicator. The release agent is broken down by sunlight, which leads to a rapid ...
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