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> So is a 1nm object, if you have a sufficiently powerful microscope. :-P
Har har - a "naked eye" doesn't usually have a microscope attached to it :-)
> So 100um might be visible from 40cm away then?
For me it is.
BTW I just checked and I'm sitting about 60 cm away from my monitor, which
equates to 145 dpi if I assume 1/60 degree resolution of my eye. My monitor
is 95 dpi, so I guess it could be a bit higher resolution, or I need to sit
further back :-)
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