To help compare different orders of magnitude this page lists
lengthLength is the long dimension of any object. Not to be confused with Depth which is the property of the object that appears to go away from the observer. The length of a thing is the distance between its ends, its linear extent as measured from end to end...
s between 10
−7 and 10
−6 mThe metre or meter is the basic unit of length in the International System of Units . Historically, the metre was defined by the French Academy of Sciences as the length between two marks on a platinum-iridium bar, which was designed to represent one ten-millionth of the distance from the Equator...
(100
nmA nanometre is a unit of length in the metric system, equal to one billionth of a meter....
and 1
µmA micrometre or micron is one millionth of a metre,or equivalently one thousandth of a millimetre....
).
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To help compare different orders of magnitude this page lists
lengthLength is the long dimension of any object. Not to be confused with Depth which is the property of the object that appears to go away from the observer. The length of a thing is the distance between its ends, its linear extent as measured from end to end...
s between 10
−7 and 10
−6 mThe metre or meter is the basic unit of length in the International System of Units . Historically, the metre was defined by the French Academy of Sciences as the length between two marks on a platinum-iridium bar, which was designed to represent one ten-millionth of the distance from the Equator...
(100
nmA nanometre is a unit of length in the metric system, equal to one billionth of a meter....
and 1
µmA micrometre or micron is one millionth of a metre,or equivalently one thousandth of a millimetre....
).
Distances shorter than 100 nmTo help compare different orders of magnitude this page lists lengths between 10−8 and 10−7 metres .Distances shorter than 10 nanometres*10 nm = 10 nanometres = 10−8 metres...
- 100 nm — greatest particle size that can fit through a surgical mask
A surgical mask, colloquially also known as a SARS mask is intended to be worn by health professionals during surgery and at other times to catch the bacteria shed in liquid droplets and aerosols from the wearer's mouth and nose....
- 100 nm — 90% of particles in wood smoke
This article is about the substance. For other uses, see Smoke .Smoke is the collection of airborne solid and liquid particulates and gases emitted when a material undergoes combustion or pyrolysis, together with the quantity of air that is entrained or otherwise mixed into the mass...
are smaller than this
- 120 nm — greatest particle size that can fit through a ULPA
ULPA is an acronym for "ultra low particulate air".An ULPA filter can remove from the air at least 99.999% of dust, pollen, mold, bacteria and any airborne particles with a size of 120 nanometres or larger...
filter
- 125 nm — standard depth of pits on compact disc
A Compact Disc is an optical disc used to store digital data. It was originally developed to store sound recordings exclusively, but later it also allowed the preservation of other types of data. Audio CDs have been commercially available since October 1982...
s (width: 500 nm, length: 850 nm to 3.5 µm)
- 180 nm — typical length of the rabies virus
Rabies is a viral neuroinvasive disease that causes acute encephalitis in warm-blooded animals. It is zoonotic , most commonly by a bite from an infected animal but occasionally by other forms of contact...
- 200 nm — typical size of a Mycoplasma
Mycoplasma is a genus of bacteria which lack a cell wall. Without a cell wall, they are unaffected by many common antibiotics such as penicillin or other beta-lactam antibiotics that target cell wall synthesis. They can be parasitic or saprotrophic. Several species are pathogenic in humans,...
bacterium, among the smallest bacteria
- 280 nm — near ultraviolet
Ultraviolet light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than x-rays, in the range 10 nm to 400 nm, and energies from 3 eV to 124 eV...
wavelength
- 300 nm — greatest particle size that can fit through a HEPA
A high efficiency particulate air or HEPA filter is a type of high-efficiency air filter.-Function:HEPA filters, by definition, remove at least 99.97% of airborne particles 0.3 micrometers in diameter....
(High Efficiency Particulate Air) filter (N100 removes up to 99.97% at 0.3 micrometres, N95 removes up to 95% at 0.3 micrometres)
- 380-420 nm — wavelength of violet
As the name of a color, violet is used in two senses: first, referring to the color of light at the short-wavelength end of the visible spectrum, approximately 380–420 nm when indigo is recognized as a distinct color, or more commonly 380–450 nm...
light (see colorColor or colour is the visual perceptual property corresponding in humans to the categories called red, yellow, blue and others. Color derives from the spectrum of light interacting in the eye with the spectral sensitivities of the light receptors...
and optical spectrum)
- 420-440 nm — wavelength of indigo
Indigo is the color on the electromagnetic spectrum between about 420 and 450 nm in wavelength, placing it between blue and violet. Although traditionally considered one of seven divisions of the optical spectrum, modern color scientists do not usually recognize indigo as a separate division and...
light
- 440-500 nm — wavelength of blue
Blue is a colour, the perception of which is evoked by light having a spectrum dominated by energy with a wavelength of roughly 440–490 nm. It is considered one of the additive primary colours. On the HSV Colour Wheel, the complement of blue is yellow; that is, a colour corresponding to an equal...
light
- 500-520 nm — wavelength of cyan
Cyan may be used as the name of any of a number of colors in the blue/green range of the spectrum. In reference to the visible spectrum cyan is used to refer to the color obtained by mixing equal amounts of green and blue light or the removal of red from white light...
light
- 520-565 nm — wavelength of green
Green is a color, the perception of which is evoked by light having a spectrum dominated by energy with a wavelength of roughly 520–570 nanometres. In the subtractive color system, it is not a primary color, but is created out of a mixture of yellow and blue, or yellow and cyan; it is considered...
light
- 565-590 nm — wavelength of yellow
Yellow is the color evoked by light that stimulates both the L and M cone cells of the retina about equally, with no significant stimulation of the S cone cells. Light with a wavelength of 570–580 nm is yellow, as is light with a suitable mixture of somewhat longer and shorter wavelengths...
light
- 590-625 nm — wavelength of orange
The colour orange occurs between red and yellow in the visible spectrum at a wavelength of about 585–620 nm, and has a hue of 30° in HSV colour space. It is numerically halfway between red and yellow in a gamma-compressed RGB colour space The complementary colour of orange is azure, a slightly...
light
- 625-740 nm — wavelength of red
Red is any of a number of similar colors evoked by light consisting predominantly of the longest wavelengths of light discernible by the human eye, in the wavelength range of roughly 630–740 nm. Longer wavelengths than this are called infrared , and cannot be seen by the naked human eye...
light
Distances longer than 1 µmTo help compare different orders of magnitude this page lists some items with lengths between 10−6 and 10−5 m .Distances shorter than 1 µm*1 µm — the side of square of area 10−12 m²...