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angstrom

angstrom

The Columbia Encyclopedia, 6th ed. | 2008 | Copyright

angstrom , abbr. Å, unit of length equal to 10 -10 meter (0.0000000001 meter); it is used to measure the wavelengths of visible light and of other forms of electromagnetic radiation , such as ultraviolet radiation and X rays. Scientists now prefer to use the nanometer (nm); 1 nm=10 Å. The angstrom is named in honor of Swedish physicist Anders J. Ångström.

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Anders Jöns Ångström

The Columbia Encyclopedia, 6th ed. | 2007 | Copyright

Anders Jöns Ångström , 1814-74, Swedish physicist. He was educated at the Univ. of Uppsala and in 1839 became a member of its faculty. He is particularly noted for his study of light, especially spectrum analysis. He mapped the solar spectrum, discovered hydrogen in the solar atmosphere, and was the first to examine the spectrum of the aurora borealis. A unit of length used to measure light waves is named for him.

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angstrom

A Dictionary of Biology | 2004 | Copyright

angstrom Symbol Å. A unit of length equal to 10–10 metre. It was formerly used to measure wavelengths and intermolecular distances but has now been replaced by the nanometre. 1 Å = 0.1 nanometre. The unit is named after the Swedish pioneer of spectroscopy A. J. Ångstrom (1814–74).
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angstrom

World Encyclopedia | 2005 | Copyright

angstrom (angstrom unit) (symbol Å) Obsolete unit of length, equal to 10−10 m or 0.1nm (nanometre). It was used to express the wavelength of light and ultraviolet radiation, and to measure distances between atoms and between molecules. The angstrom was replaced by the nanometre.
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angstrom

The Oxford Pocket Dictionary of Current English | 2009 | Copyright

ang·strom / ˈangstrəm/ (also ång·ström, angstrom unit) (abbr.: Å) • n. a unit of length equal to one hundred-millionth of a centimeter, 10−10 meter, used mainly to express wavelengths and interatomic distances.

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ångstrom

A Dictionary of Earth Sciences | 1999 | | Copyright

ångstrom (Å) Unit of length equal to 10−10 m, used in measuring electromagnetic radiation including visible light and X-rays. Replaced in SI units by the nanometre (10 Å = 1 nm).
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AILSA ALLABY and MICHAEL ALLABY. "ångstrom." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "ångstrom." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O13-ngstrom.html

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Ångstrom

A Dictionary of Food and Nutrition | 2005 | | Copyright

Ångstrom A unit of length equal to 10−8 cm (10−10 m) and hence = 10 nm; not an official SI unit, but commonly used in structural chemistry and crystallography.
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DAVID A. BENDER. "Ångstrom." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>.

DAVID A. BENDER. "Ångstrom." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O39-ngstrom.html

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angstrom

A Dictionary of Nursing | 2008 | Copyright

angstrom (ang-strŏm) n. a unit of length equal to one ten millionth of a millimetre (10−10 m), sometimes used to express wavelengths and interatomic distances. Symbol Å.
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angstrom

Oxford Dictionary of Rhymes | 2007 | Copyright

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