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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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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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Word Entries containing the term:
“symbol”
Amphora: The word and the @ symbol
Greek > Latin: @ two-handled; a vessel with two handles or ears; a pitcher or vase unit.
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Units of Special Compositions, Topics, or Subjects That Provide Special Information
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brewster, symbol B
A unit for measuring the reaction of optical materials to stress, defined in terms of the slowing down of light passing through the material when it is stretched or compressed.
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Measurements and Mathematics Terms
(page 3)