3 ms·
Its my understanding that the human finger, run across an extremely flat surface, can detect a < few atoms. (via a quick google: https://www.newscientist.com/a
by mjburgess 4y ago
Its my understanding that the human finger, run across an extremely flat surface, can detect a < few atoms.
(via a quick google: https://www.newscientist.com/article/2276384-your-finger-can-feel-the-change-of-a-single-atom-in-a-material https://www.newscientist.com/article/2276384-your-finger-can...)
- mhb 4y agoIt looks like that has to do with surface texture. I can reliably feel a step of 0.005" (0.13mm). I doubt if steps under 0.001" (0.03mm) can be felt. Nowhere near atomic scale.
- hgsgm 4y agoNot true. It's one atom per molecule, changing the friction. > those who touched the surfaces could differentiate them based on chemical differences, including the substitution of one atom within each silane molecule for another, because of subtle changes in friction