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Boosted by cstanhope@social.coop ("Your friendly 'net denizen"):
tubetime ("Tube🌱Time") wrote:

this is the surface of a hard drive platter. on the right side, lasers have been used to apply a microtexture, forming a region where it is safe for the read/write head to land without crashing or sticking (stiction).

greenish surface that has the look of brushed metal. on the right side, there's a pattern of alternating dots (pits).