Technology
Your hard drive's head flies above the platter
HERE’S THE INTERESTING PART
The tiny metallic arm that reads data off a spinning hard drive platter does not actually touch the surface; it flies on a microscopic cushion of air generated by the spinning disc. The gap is so incomprehensibly small that a single particle of cigarette smoke or human hair is akin to a massive boulder blocking a highway. One bump, and the head crashes, physically scraping your files out of existence.
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