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Raindrops carry electric charge that eats metal

·Sep 5, 2026
Source: The Weather Channel
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Photo credit : Water droplets scattered across a car's gray hood surface with dark panel lines

Raindrops sit on a grey sports car in Bamberg, Germany.(David Ebener/picture alliance via Getty Images)Scientists have recently discovered a new source of corrosion that we didn't know about, and it comes from thunderstorms and friction. Researchers from the Max Planck Institute for Polymer Research in Germany found that water carrying an electrical charge can puncture the protective coating on copper and gold in a laboratory. The electricity comes from expected places like a thunderstorm, but static electricity created by friction plays a role, too. They found that water droplets that rolled down a surface as simple as a leaf or as complex as quartz gained a charge that damaged coated metals. This damage did not occur when water droplets were neutralized. It is well known that acids or pollutants cause corrosion, but this new study suggests clean water with just a charge can do the same damage. We should be clear that this was a study carried out in a laboratory, and we don't know yet how much this process occurs in the real world. Get More of Our News on GoogleSet The Weather Company as a 'Preferred Source' to get quicker access to the news you value.

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