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To help compare different orders of magnitude this page lists lengths between 10-7 and 10-6 m (100 nm and 1 µm).
Distances shorter than 100 nm
100 nm — greatest particle size that can fit through a surgical mask
120 nm — greatest particle size that can fit through a ULPA filter
125 nm — standard depth of pits on compact discs (width: 500 nm, length: 850 nm to 3.5 µm)
200 nm — typical size of a Mycoplasma bacterium, among the smallest bacteria
300 nm — greatest particle size that can fit through a HEPA filter
420-440 nm — wavelength of indigo light
440-500 nm — wavelength of blue light
500-520 nm — wavelength of cyan light
520-565 nm — wavelength of green light
565-590 nm — wavelength of yellow light
590-625 nm — wavelength of orange light
625-740 nm — wavelength of red light
Distances longer than 1 µm
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See also
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