angstrom
(Å or A)
   a metric unit of length, equal to 0.1 nanometer or 10-10 meter. Angstroms are used most often to measure the wave length of light waves. There is a technique called spectroscopy for identifying chemical substances by the wave lengths of light which they absorb (or emit, depending on the circumstances). Light shining through or from the substance is passed through a prism, which separates the various wave lengths to form a colorful spectrum. The spectrum often includes bright bands corresponding to wave lengths at which the substance emits light, or dark bands if the substance is absorbing light. The pattern of bands identifies the substance in somewhat the same way a fingerprint identifies a person. One of the pioneers of spectroscopy was the Swedish physicist Anders Jon Ångström (1814-1874), and in his honor the wave lengths of light waves are customarily stated in angstroms. Although English speakers usually pronounce the word as if it were English, the Swedish pronunciation is closer to "ong-strerm."

Dictionary of units of measurement. 2015.

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  • Angstrom — Ångström Pour les articles homonymes, voir Å et Ångström (homonymie). Un ångström, parfois également orthographié angström, aangström ou angstrœm (symbole Å, prononcé …   Wikipédia en Français

  • Angström — Ångström Pour les articles homonymes, voir Å et Ångström (homonymie). Un ångström, parfois également orthographié angström, aangström ou angstrœm (symbole Å, prononcé …   Wikipédia en Français

  • Angstrom — Ångström ist der Familienname von: Anders Jonas Ångström (1814–1874), schwedischen Physiker Knut Johann Ångström (1857–1910), Physiker und Erfinder des Kompensationspyrheliometer sowie der Name von: Ångström (Einheit), nach Anders Jonas Ångström… …   Deutsch Wikipedia

  • Angström — Ångström ist der Familienname von: Anders Jonas Ångström (1814–1874), schwedischen Physiker Knut Johann Ångström (1857–1910), Physiker und Erfinder des Kompensationspyrheliometer sowie der Name von: Ångström (Einheit), nach Anders Jonas Ångström… …   Deutsch Wikipedia

  • Ängström — Ångström ist der Familienname von: Anders Jonas Ångström (1814–1874), schwedischen Physiker Knut Johann Ångström (1857–1910), Physiker und Erfinder des Kompensationspyrheliometer sowie der Name von: Ångström (Einheit), nach Anders Jonas Ångström… …   Deutsch Wikipedia

  • angström — [ ɑ̃gstrøm ] n. m. • 1906; nom d un physicien suédois ♦ Phys. Unité de longueur employée en microphysique, valant un dix millième de micromètre, soit 10 10 mètre (symb. Å). ● angström nom masculin (de Ångström, nom propre) Ancienne unité de… …   Encyclopédie Universelle

  • Ångström — ist der Familienname von: Anders Jonas Ångström (1814–1874), schwedischer Physiker Knut Johann Ångström (1857–1910), Physiker und Erfinder des Kompensationspyrheliometers sowie der Name von: Ångström (Einheit), nach Anders Jonas Ångström benannte …   Deutsch Wikipedia

  • Ångström — distribution Ångström с GPE 2.7 Разработчик Команда Ångström distribution Семейство ОС Linux Последняя версия 2007.12 Декабрь 2007 Т …   Википедия

  • angstrom — ÁNGSTROM, angstromi, s.m. (fiz.) Unitate de măsură pentru lungimi de undă egală cu a zecea milioana parte dintr un milimetru. – Din fr. angstrœm. Trimis de ana zecheru, 13.09.2007. Sursa: DEX 98  ángstrom s. m. (sil. ang ), pl. ángstromi; simb.… …   Dicționar Român

  • angstrom — (also ångström) ► NOUN Physics ▪ a unit of length equal to one hundred millionth of a centimetre, 10 10 metre. ORIGIN named after the Swedish physicist A. J. Ångström (1814 74) …   English terms dictionary

  • angstrom — [aŋ′strəm] n. [after ÅNGSTRÖM Anders Jonas] one hundred millionth of a centimeter: a unit used in measuring the length of light waves: symbol, Å: also angstrom unit …   English World dictionary

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