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According to ScienceAlert (This article and its images were originally posted on ScienceAlert December 1, 2018 at 08:12PM.)
We know that even a grain of dust or tiny droplet can damage a tough metal surface if the particle gathers up a high-enough speed when it smashes into it.
But until now there’s been a problem figuring out how or why that damage happens. That’s because the speed has to be really freaking high, and the scales are really incredibly tiny.
Now researchers from MIT have developed cameras that are fast enough, and have enough magnification, to capture that moment of impact in detail – and have learned that these speeds are so intense, the impact actually partially melts the surface.
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