Wikipedia:Micrometre
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The following article is a local copy of the Wikipedia article at Micrometre. (more info)
For the measuring instrument, see Micrometer.
"Microscale" redirects here. For the field of meteorology, see Microscale meteorology.
"Microscale" redirects here. For the field of chemistry, see Microscale chemistry.
| SI units | |
|---|---|
| 1.000×10−6 m | 1.0000 μm |
| US customary / Imperial units | |
| 3.281×10−6 ft | 39.37×10−6 in |
A micrometre or micron (American spelling: micrometer; symbol µm) is one millionth of a metre, or equivalently one thousandth of a millimetre. It can be written in scientific notation as 1×10−6 m, meaning 1⁄1000000 m.
A strand of human hair is about 100 µm wide.[1] Red blood cells are 7 µm in diameter.[1]
The micrometre is a common unit of measurement for wavelengths of infrared radiation. The name micron and the solitary symbol µ (both of which were official between 1879 and 1967 [2]) are still used (especially in astronomy and the semiconductor industry) to denote a micrometre.
See also
- 1 micrometre (for a comparative description of the micrometre in the context of other orders of magnitude)
- SI
- SI prefix
- Metric system
- Orders of magnitude
- Micronization
- µ
- Nanometre
References
- ^ a b DNA From The Beginning, section 6: Genes are real things., "Amination" section, final slide
- ^ BIPM - Resolution 7 of the 13th CGPM (1967/68), "Abrogation of earlier decisions (micron, new candle)".
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