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angstrom
A unit of wavelength or distance, equivalent to 1/10,000 micrometer or 1/10,000,000,000 meter.
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Astronomy and related astronomical terms
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angstrom, symbol Å
A unit of length equal to one ten-billionth of a meter (10 meters or one-ten-millionth of a millimeter), used to measure the wavelengths of electromagnetic radiation.
Named for Anders Jonas Ångström (1814-1874), Swedish astrophysicist.
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Measurements and Mathematics Terms
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“angstrom”
Angstrom (or) Ångström, Anders Jonas (1814-1874)
A Swedish astrophysicist who worked in spectroscopy and solar physics.
His writing titled Recherches sur le spectre solaire (1868) presented an atlas of the solar spectrum with measurements of 1,000 spectral lines expressed in units of one-ten-millionth of a millimeter, the unit which later became the angstrom or ångstrom.
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Science and Technology
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angstrom unit, symbol: A or Å
A length equal to 10-10 meters or one-ten-millionth of a millimeter, used for atomic measurements and the wavelengths of electromagnetic radiation.
A unit that measures the wavelength of light and equals 0.00000001 of a centimeter. Blue light has a wavelength of about 4400 angstroms, yellow light 5500 angstroms, and red light 6500 angstroms.
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Science and Technology
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