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Equivalents in other units


How long is 3 microns?

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It's about one-and-a-half times as long as an E. coli Bacterium.
In other words, the length of an E. coli Bacterium is 0.67 times 3 microns.
(Escherichia coli) (rod-shaped configuration)
An rod-shaped E. coli bacterium measures about two micrometers in length. A staple of biology labs, E. coli can reproduce in as little as twenty minutes.
It's about one-and-three-fifths times as long as a Mitochondrion.
In other words, the length of a Mitochondrion is 0.625 times 3 microns.
(Eukaryotic; average)
It's about half as long as a Nucleus (Cellular).
In other words, the length of a Nucleus (Cellular) is 2 times 3 microns.
(for animal cell)
It's about two-fifths as long as a Red Blood Cell.
In other words, the length of a Red Blood Cell is 2.5 times 3 microns.
(a.k.a. RBCs, a.k.a. haematids, a.k.a. erythrocyte, a.k.a. erythroid cells, a.k.a. red blood corpuscles) An average Red Blood Cell measures 7.5 ┬Ám (micrometers) in diameter. An average human has 20 - 30 trillion red blood cells in their body and each cell completes a circulatory lap in about 20 seconds.
It's about one-thirty-fifth as long as a Strand of Hair.
In other words, the length of a Strand of Hair is 33 times 3 microns.
(average)
It's about one-thirty-fifth as tall as a sheet of Paper.
In other words, the height of a sheet of Paper is 30 times 3 microns.
(for US Letter, a.k.a. ANSI A; 215.9mm by 279.4mm (8.5 in x 11 in); 20lb)
It's about one-thirty-fifth as tall as a Human hair, Strand of.
In other words, the height of a Human hair, Strand of is 33 times 3 microns.
(average)