Understanding micrometers ( µm ) scale. Is this true these scale sizes.?
Dust is 0.5 µm
Human hair 50µm to 70 µm
Bacteria 3 µm
Human red blood cell is 7.5 micrometers
Ant I think is anout same size has Human hair that would be 50µm to 70 µm,
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Depends if you are talking about length vs width. All of your estimations are, more or less, on target, except for the last one (you're off by an order of magnitude). Check the source below for more information.
hope this helps!
:)