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[-] Duckingold@lemmy.world 13 points 6 days ago

It likely wasn't done on an electron microscope, or at least there is no reason to. There is no scale bar, but quick look online tells me a very fine needle is about 0.016in. 500x magnification optical lens would give you more than enough resolution for a photo like that.

this post was submitted on 09 Aug 2025
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