Nanometre
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Overview
A nanometre (American spelling: nanometer, symbol nm) (Greek: νάνος, nanos, dwarf; μετρώ, metrό, count) is a unit of length in the metric system, equal to one billionth of a metre (i.e., one millionth of a millimetre), which is the current SI base unit of length. It can be written in scientific notations as 1×10−9 m (engineering notation) or 1 E-9 m (exponential notation) — both meaning 1/1,000,000,000 metres.
femtometre <<< picometre <<< nanometre <<< micrometre <<< millimetre < centimetre < decimetre < metre < decametre < hectometre < kilometre
It is one of the more often used units for very small lengths, and equals ten Ångström, an internationally recognized non-SI unit of length. It is often associated with the field of nanotechnology. Formerly, millimicron (symbol mµ) was used for the nanometre.
It is also the most common unit used to describe the manufacturing technology used in the semiconductor industry. It is the most common unit to describe the wavelength of light, with visible light falling in the region of 400-700nm.
Similar terms
Nanometry is the science of counting and measuring particles on the scale of nanometres.
The term nanoscale is used to refer to objects with dimensions on the order 1-100 nm. The term is often heard in relation to nanotechnology.
See also
- 1 E-9 m
- SI prefix
- Orders of magnitude (length)
- Conversion of units, for comparison with other units of length
External links
ca:Nanòmetre cy:Nanomedr et:Nanomeeter el:Νανόμετροeo:Nanometro eu:Nanometro gl:Nanometro is:Nanómetri it:Nanometro nl:Nanometer ja:ナノメートル no:Nanometer nn:Nanometersk:Nanometer sl:Nanometer sv:Nanometer th:นาโนเมตร vi:Nanômét
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
