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| + | An '''angstrom''' (symbol ''Å'') is a unit of [[length]] equivalent to one ten-billionth of a meter (1×10<sup>−10</sup> m). It is named after [[Sweden|Swedish]] physicist Anders Jonas Ångström. The angstrom is most typically used to measure the size of [[atoms]], as well as the wavelengths of [[electromagnetic radiation]]. |
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| | + | ==External links== |
| | + | *[http://liftoff.msfc.nasa.gov/academy/universe/angstrom.html What Is an Angstrom?] |
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| | + | [[Category:Units of Measurement]] |